1 Exhibit 99 TRW Inc. and Subsidiaries Computation of Ratio of Earnings to Fixed Charges - Unaudited (In millions except ratio data) Nine Months Years Ended December 31 ended --------------------------------------------------- September 30, 1995 1994 1993 1992 1991 1990 ------------------ ------ ------ ------ ------- ------ Earnings(loss) before income taxes $530.3 $534.5 $359.1 $347.6 $(129.4)(A) $343.1 Unconsolidated affiliates 1.8 (0.6) 0.7 (0.9) (1.0) (13.2) Minority earnings 7.5 5.2 5.7 2.6 (7.8) (0.5) Fixed charges excluding capitalized interest 120.1 160.9 194.0 227.1 254.3 252.0 ------ ------ ------ ------ ------- ------ Earnings $659.7 $700.0 $559.5 $576.4 $116.1 $581.4 ------ ------ ------ ------ ------- ------ Fixed Charges: Interest expense $76.2 $104.8 $137.8 $162.9 $189.6 $186.9 Capitalized interest 3.8 6.6 7.9 12.7 10.1 7.6 Portion of rents representative of interest factor 43.1 54.7 54.0 64.0 64.4 64.6 Interest expense of unconsolidated affiliates 0.8 1.4 2.2 0.2 0.3 0.5 ------ ------ ------ ------ ------- ------ Total fixed charges $123.9 $167.5 $201.9 $239.8 $264.4 $259.6 ------ ------ ------ ------ ------- ------ Ratio of earnings to fixed charges 5.3x 4.2x 2.8x 2.4x 0.4x(A) 2.2x ------ ------ ------ ------ ------- ------ (A) The 1991 loss before income taxes of $129.4 million includes a charge of $343 million to cover costs associated with divestment and restructuring activities. Excluding this charge, the ratio of earnings to fixed charges would have been 1.7x.