THIRD AMENDMENT TO PURCHASE AGREEMENT

     This Third  Amendment to Purchase  Agreement  (this "Third  Amendment")  is
entered into  effective as of April 6, 2001, by and among  Ferrellgas  Partners,
L.P., a Delaware limited partnership ("Purchaser"), Ferrellgas, L.P., a Delaware
limited  partnership  ("Subsidiary  OLP"), and The Williams  Companies,  Inc., a
Delaware  corporation  ("Seller") and successor in interest to Williams  Natural
Gas  Liquids,  Inc., a Delaware  corporation.  This Third  Amendment  amends the
Purchase  Agreement  dated as of November  7, 1999,  as amended  (the  "Purchase
Agreement"),  by and among  Purchaser,  Subsidiary OLP and Williams  Natural Gas
Liquids, Inc. Unless otherwise defined herein, all capitalized terms used herein
shall have the meaning given to them in the Purchase Agreement.


                                    RECITALS:

     WHEREAS, in connection with the Purchase Agreement, Purchaser issued Senior
Units to Williams Natural Gas Liquids, Inc.; and

     WHEREAS,  pursuant to Section 9.3 of the  Purchase  Agreement,  the parties
hereto desire to amend the Purchase Agreement to reflect amendments incorporated
into the  Third  Amended  and  Restated  Agreement  of  Limited  Partnership  of
Purchaser,  which sets forth the  rights,  terms and  obligations  of the Senior
Units and the holders thereof;

     NOW,  THEREFORE,  effective  as of the date  first  set  forth  above,  the
Purchase Agreement is amended as follows:


                                   ARTICLE 1

                                   AMENDMENTS

1.1 The first  sentence of Section  4.2(d) of the  Purchase  Agreement is hereby
amended and restated in its entirety to be as follows:

         On or prior to the eighth  anniversary  of the Closing  Date,  promptly
         (and in each event, no later than five business days) after any sale of
         common units  issuable  upon  conversion  of the Senior Units  ("Common
         Units") by Seller and/or a permitted  transferee  of Seller,  Purchaser
         and Subsidiary OLP,  jointly and severally,  shall pay to Seller and/or
         such permitted  transferee,  as applicable,  in cash the product of (i)
         the difference,  if positive,  of the Converted Common Unit Value (plus
         accumulated and undistributed  distributions)  less the Net Common Unit
         Proceeds, multiplied by (ii) the number of Common Units sold; provided,
         however,  that this  provision  shall  apply  only to one sale for each
         Common  Unit and only to the extent  that such sale  complies  with the
         Purchaser   MLP   Partnership   Agreement,    as   amended,   and   the
         Representations  Agreement  dated December 17, 1999, as amended,  among

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         the Purchaser, the General Partner, Subsidiary OLP and Seller.

     1.2 Section  4.2(d)(B)  of the  Purchase  Agreement  is hereby  amended and
restated in its entirety to be as follows:

         "Net Common Unit  Proceeds"  means an amount equal to the net proceeds,
         on a  per  Common  Unit  basis,  received  by  Seller  or  a  permitted
         transferee of Seller upon a sale by Seller or such permitted transferee
         of any of the  Common  Units in a  single  transaction  or a series  of
         transactions  involving (x) a bona fide sale to an  unaffiliated  third
         party, or (y) an underwritten public offering by a reputable investment
         bank.

     1.3 Section 4.2(f) of the Purchase Agreement is hereby amended and restated
in its entirety to be as follows:

         In the event that,  after the earlier of (a) December 31, 2005,  or (B)
         the  occurrence  of a Material  Event,  as defined in the Purchaser MLP
         Partnership  Agreement,  one or more holder(s) of the Senior Units have
         not  irrevocably  elected to convert  their  Senior  Units into  Common
         Units,  on or prior to the  eighth  anniversary  of the  Closing  Date,
         promptly (and in each event,  no later than five  business  days) after
         any sale of Senior  Units by Seller  and/or a permitted  transferee  of
         Seller (which sale shall be in accordance  with the  definition of "Net
         Senior Unit Proceeds" below), Purchaser and Subsidiary OLP, jointly and
         severally, shall pay to Seller and/or a permitted transferee of Seller,
         as applicable,  in cash the product of (i) the difference, if positive,
         of the Face Value per Senior Unit (plus  accumulated and  undistributed
         distributions)  less the Net Senior Unit  Proceeds,  multiplied by (ii)
         the number of Senior Units sold; provided, however, that this provision
         shall  apply  only to one  sale for  each  Senior  Unit and only to the
         extent  that such sale  complies  with the  Purchaser  MLP  Partnership
         Agreement, as amended, and the Representations Agreement dated December
         17,  1999,  as  amended,  among the  Purchaser,  the  General  Partner,
         Subsidiary OLP and Seller.  "Net Senior Unit Proceeds"  means an amount
         equal to the net  proceeds,  on a per Senior  Unit  basis,  received by
         Seller and/or a permitted transferee of Seller upon a sale by Seller or
         such  permitted  transferee  of any of the  Senior  Units  in a  single
         transaction or a series of transactions  involving (x) a bona fide sale
         to an unaffiliated third party, or (y) an underwritten  public offering
         by a reputable investment bank.

     1.4 The first clause of Section 7.3(a) of the Purchase  Agreement until the
definition  of  "Seller  Indemnitees"  is hereby  amended  and  restated  in its
entirety to be as follows:

         Subject to the terms and  conditions  set forth herein,  from and after
         the Closing,  Purchaser  shall  indemnify and hold harmless (A) Seller,

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         (B) any lender or lenders to whom the Senior Units (or any Common Units
         into which the Senior Units are  converted)  are pledged in  connection
         with a loan to enable a permitted transferee of all or a portion of the
         rights of Seller hereunder to purchase,  among other things, the Senior
         Units (or any Common Units into which the Senior Units are  converted),
         or any refinancings thereof, or to whom the Senior Units (or any Common
         Units  into which the  Senior  Units are  converted)  are  assigned  in
         connection  with a foreclosure on the Senior Units (or any Common Units
         into which the Senior Units are  converted)  pursuant to such loan, (C)
         any permitted  transferee  who acquires the Senior Units (or any Common
         Units  into which the Senior  Units are  converted)  upon or after such
         foreclosure,  and (D) Seller in the event  Seller  acquires  the Senior
         Units  from  JEF  Capital   Management,   Inc.,  and  their  respective
         directors, officers, employees, affiliates, controlling persons, agents
         and  representatives  and their  successors and assigns  (collectively,
         "Seller Indemnitees")

     1.5 A new Section  8.1(d) is hereby  added to the  Purchase  Agreement  and
shall read as follows:

         Notwithstanding  the  foregoing,  if any  rights  of a  party  to  this
         Agreement are assigned or  transferred to any other person or entity in
         accordance  with the terms  hereof,  no such rights may  thereafter  be
         modified  or  terminated   without  the  consent  of  the  assignee  or
         transferee.

     1.6 The third notification address of Section 9.1 of the Purchase Agreement
is hereby  amended by deleting in its entirety  the address  "Andrews and Kurth,
L.L.P., 805 Third Avenue, New York, New York 10022, Attention:  Michael Swidler,
Telecopy:  (212)  850-2929" and replacing it with the address  "Vinson & Elkins,
L.L.P.,  666 Fifth  Avenue,  26th floor,  New York,  New York 10103,  Attention:
Michael Swidler, Telecopy: (917) 206-8100."

     1.7 The fifth notification address of Section 9.1 of the Purchase Agreement
is hereby  amended by deleting in its entirety  the address  "Bryan Cave L.L.P.,
3500 One Kansas City Place, 1200 Main Street, Kansas City, MO 64105,  Attention:
Morris K. Withers,  Telecopy:  (816) 374-3300" and replacing it with the address
"Mayer, Brown & Platt, 700 Louisiana Street,  Suite 3600, Houston,  Texas 77002,
Attention: David L. Ronn, Telecopy: (713) 632-1825."

     1.8 Section 9.6 is hereby  amended and  restated in its entirety to read as
follows:

         This Agreement shall be binding upon and inure solely to the benefit of
         each  party   hereto,   the  Seller   Indemnitees   and  the  Purchaser
         Indemnitees,  and nothing in this  Agreement,  express or  implied,  is
         intended to or shall confer upon any other person any right, benefit or
         remedy of any nature whatsoever under or by reason of this Agreement.

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                                  ARTICLE 2

                               GENERAL PROVISIONS

     2.1 Except as  expressly  amended  hereby,  the  Purchase  Agreement  shall
continue in full force and effect in accordance  with the provisions  thereof on
the date hereof.

     2.2  Article  IX of the  Purchase  Agreement  shall  apply  to  this  Third
Amendment and be incorporated  herein with the same force and effect as if those
sections were reprinted as part of this Third Amendment, including to the extent
Article IX was expressly amended herein.


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     IN WITNESS  WHEREOF,  the parties hereto have executed this Third Amendment
effective for all purposes as of the date first set forth above.


        FERRELLGAS PARTNERS, L.P.

        By: Ferrellgas, Inc., its General Partner

        By:  /s/ Kevin T. Kelly
           ---------------------------------------------------------------------
             Kevin T. Kelly
             Senior Vice President


        FERRELLGAS, L.P.

        By: Ferrellgas, Inc., its General Partner

        By:  /s/ Kevin T. Kelly
           ---------------------------------------------------------------------
             Kevin T. Kelly
             Senior Vice President




        THE WILLIAMS COMPANIES, INC.

        By:  /s/ S. J. Malcolm  By:  /s/ Don R. Wellendorf, his attorney in fact
           ---------------------------------------------------------------------
             Name:  S. J. Malcolm
             Title: Executive Vice President




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