Finding the Fourth Proportional to 128,513,120.79, 177,494,125.59 and 86,624,941.17
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Solution
The fourth proportional to 128,513,120.79, 177,494,125.59 and 86,624,941.17 is: 119,640,843.62
Step by Step Solution
- Step 1: Write the proportion equation
128,513,120.79 : 177,494,125.59 = 86,624,941.17 : x - Step 2: Convert to fraction form
128,513,120.79/177,494,125.59 = 86,624,941.17/x - Step 3: Cross multiply
128,513,120.79x = 177,494,125.59 × 86,624,941.17 - Step 4: Simplify right side
128,513,120.79x = 15,375,418,187,254,342 - Step 5: Solve for x
x = 15,375,418,187,254,342/128,513,120.79 - Step 6: Final answer
x = 119,640,843.62
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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.