Exhibit 12 UNION PACIFIC CORPORATION AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Unaudited) - ------------------------------------------------------------------------------- Three Months Ended March 31, ----------------------------- Millions of Dollars Except Ratios 1999 1998 - ------------------------------------------------------------------------------- Earnings Net Income (Loss).......................................... $129 $(62) Undistributed equity earnings.............................. (10) (9) - ------------------------------------------------------------------------------- Total...................................................... 119 (71) - ------------------------------------------------------------------------------- Income Taxes................................................. 72 (43) - ------------------------------------------------------------------------------- Fixed Charges: Interest expense including amortization of debt discount... 192 161 Portion of rentals representing an interest factor......... 45 45 - ------------------------------------------------------------------------------- Total...................................................... 237 206 - ------------------------------------------------------------------------------- Earnings Available for Fixed Charges......................... 428 92 - ------------------------------------------------------------------------------- Total Fixed Charges -- as above.............................. $237 $206 - ------------------------------------------------------------------------------- Ratio of earnings to fixed charges (Note 9)................. 1.8 0.4 - -------------------------------------------------------------------------------