Finding the Fourth Proportional to 122,540.14, 169,148.84 and 74,144.56
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Solution
The fourth proportional to 122,540.14, 169,148.84 and 74,144.56 is: 102,345.79
Step by Step Solution
- Step 1: Write the proportion equation
122,540.14 : 169,148.84 = 74,144.56 : x - Step 2: Convert to fraction form
122,540.14/169,148.84 = 74,144.56/x - Step 3: Cross multiply
122,540.14x = 169,148.84 × 74,144.56 - Step 4: Simplify right side
122,540.14x = 12,541,466,316.31 - Step 5: Solve for x
x = 12,541,466,316.31/122,540.14 - Step 6: Final answer
x = 102,345.79
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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.