Finding the Fourth Proportional to 153,304,781.40, 211,561,457.64 and 87,225,278.06
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Solution
The fourth proportional to 153,304,781.40, 211,561,457.64 and 87,225,278.06 is: 120,371,372.64
Step by Step Solution
- Step 1: Write the proportion equation
153,304,781.40 : 211,561,457.64 = 87,225,278.06 : x - Step 2: Convert to fraction form
153,304,781.40/211,561,457.64 = 87,225,278.06/x - Step 3: Cross multiply
153,304,781.40x = 211,561,457.64 × 87,225,278.06 - Step 4: Simplify right side
153,304,781.40x = 18,453,506,969,427,912 - Step 5: Solve for x
x = 18,453,506,969,427,912/153,304,781.40 - Step 6: Final answer
x = 120,371,372.64
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.