Finding the Fourth Proportional to 129,331,522.71, 178,450,858.42 and 74,316,750.39
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Solution
The fourth proportional to 129,331,522.71, 178,450,858.42 and 74,316,750.39 is: 102,541,805.93
Step by Step Solution
- Step 1: Write the proportion equation
129,331,522.71 : 178,450,858.42 = 74,316,750.39 : x - Step 2: Convert to fraction form
129,331,522.71/178,450,858.42 = 74,316,750.39/x - Step 3: Cross multiply
129,331,522.71x = 178,450,858.42 × 74,316,750.39 - Step 4: Simplify right side
129,331,522.71x = 13,261,887,901,894,578 - Step 5: Solve for x
x = 13,261,887,901,894,578/129,331,522.71 - Step 6: Final answer
x = 102,541,805.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.