Finding the Fourth Proportional to 128,513,121.29, 177,494,126.28 and 86,624,941.67
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Solution
The fourth proportional to 128,513,121.29, 177,494,126.28 and 86,624,941.67 is: 119,640,844.31
Step by Step Solution
- Step 1: Write the proportion equation
128,513,121.29 : 177,494,126.28 = 86,624,941.67 : x - Step 2: Convert to fraction form
128,513,121.29/177,494,126.28 = 86,624,941.67/x - Step 3: Cross multiply
128,513,121.29x = 177,494,126.28 × 86,624,941.67 - Step 4: Simplify right side
128,513,121.29x = 15,375,418,335,772,614 - Step 5: Solve for x
x = 15,375,418,335,772,614/128,513,121.29 - Step 6: Final answer
x = 119,640,844.31
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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.