1 EXHIBIT 12(a) AMOCO COMPANY STATEMENT SETTING FORTH COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (millions of dollars, except ratios) Six Months Ended Year Ended December 31, June 30, -------------------------------------------------------------------- 1997 1996 1995 1994 1993 1992 -------- ------ ------ ------ ------- ------- Determination of Income: Consolidated earnings before income taxes and minority interest... $1,520 $3,351 $2,425 $2,688 $2,427 $1,823 Fixed charges expensed by consolidated companies.. 133 251 233 140 193 238 Adjustments for certain companies accounted for by the equity method... (4) 76 10 7 9 18 ------ ------ ------ ------ ------ ------ Adjusted earnings plus fixed charges........... $1,649 $3,678 $2,668 $2,835 $2,629 $2,079 ====== ====== ====== ====== ====== ====== Determination of Fixed Charges: Consolidated interest on indebtedness (including interest capitalized).. $ 96 $ 164 $ 152 $ 127 $ 162 $ 219 Consolidated rental expense representative of an interest factor... 43 88 71 7 31 20 Adjustments for certain companies accounted for by the equity method.... 4 8 6 5 6 12 ------ ------ ------ ------ ------ ------ Total fixed charges...... $ 143 $ 260 $ 229 $ 139 $ 199 $ 251 ====== ====== ====== ====== ====== ====== Ratio of earnings to fixed charges........... 11.5* 14.2* 11.6* 20.4 13.2 8.3 ====== ====== ====== ====== ====== ====== *Based on public debt obligations. Including debt with affiliates, the ratio would have been 4.8 as of June 30, 1997, 5.5 as of December 31, 1996, and 4.4 as of December 31, 1995.