EXHIBIT 12(b) UNION PACIFIC CORPORATION AND SUBSIDIARY COMPANIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) Nine Months Ended Sept. 30, --------------------------- Millions, Except Ratios 2001 2000 - ----------------------- -------- ------- Earnings: Net income ............................................. $ 691 $ 685 Undistributed equity earnings .......................... (34) 44 -------- ------- Total earnings .............................................. 657 729 -------- ------- Income taxes ................................................ 418 397 -------- ------- Fixed charges: Interest expense including amortization of debt discount 534 543 Portion of rentals representing an interest factor ..... 30 131 -------- ------- Total fixed charges ......................................... 564 674 -------- ------- Earnings available for fixed charges ........................ $ 1,639 $ 1,800 -------- ------- Ratio of earnings to fixed charges .......................... 2.9 2.7 -------- -------