Finding the Fourth Proportional to 129,331,525.96, 178,450,862.91 and 74,316,753.64
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Solution
The fourth proportional to 129,331,525.96, 178,450,862.91 and 74,316,753.64 is: 102,541,810.42
Step by Step Solution
- Step 1: Write the proportion equation
129,331,525.96 : 178,450,862.91 = 74,316,753.64 : x - Step 2: Convert to fraction form
129,331,525.96/178,450,862.91 = 74,316,753.64/x - Step 3: Cross multiply
129,331,525.96x = 178,450,862.91 × 74,316,753.64 - Step 4: Simplify right side
129,331,525.96x = 13,261,888,815,727,884 - Step 5: Solve for x
x = 13,261,888,815,727,884/129,331,525.96 - Step 6: Final answer
x = 102,541,810.42
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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.