1 Exhibit 12 WILLIAMS HOLDINGS OF DELAWARE, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions) Years Ended December 31, ---------------------------------------------------------- 1997 1996 1995 1994 1993 --------- --------- --------- --------- --------- Earnings: Income from continuing operations before income taxes $ 278.7 $ 316.6 $ 268.7 $ 179.1 $ 244.9 Add: Interest expense-net 61.2 31.8 31.1 21.1 9.4 Rental expense representative of interest factor 14.9 6.8 13.1 4.9 3.4 Preferred dividends of subsidiaries -- -- 5.4 -- -- Minority interest income of consolidated subsidiaries 14.0 -- -- -- -- Other (2.8) 1.2 .6 .8 (1.0) --------- --------- --------- --------- --------- Total earnings as adjusted plus fixed charges $ 366.0 $ 356.4 $ 318.9 $ 205.9 $ 256.7 ========= ========= ========= ========= ========= Fixed charges: Interest expense-net $ 61.2 $ 31.8 $ 31.1 $ 21.1 $ 9.4 Capitalized interest 11.9 3.5 9.8 4.7 5.4 Rental expense representative of interest factor 14.9 6.8 13.1 4.9 3.4 Pretax effect of dividends on preferred stock of subsidiaries -- -- 7.7 -- -- --------- --------- --------- --------- --------- Total fixed charges $ 88.0 $ 42.1 $ 61.7 $ 30.7 $ 18.2 ========= ========= ========= ========= ========= Ratio of earnings to fixed charges 4.16 8.47 5.17 6.71 14.10 ========= ========= ========= ========= =========