Finding the Fourth Proportional to 117,045.91, 161,470.33 and 74,578.02
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Solution
The fourth proportional to 117,045.91, 161,470.33 and 74,578.02 is: 102,883.88
Step by Step Solution
- Step 1: Write the proportion equation
117,045.91 : 161,470.33 = 74,578.02 : x - Step 2: Convert to fraction form
117,045.91/161,470.33 = 74,578.02/x - Step 3: Cross multiply
117,045.91x = 161,470.33 × 74,578.02 - Step 4: Simplify right side
117,045.91x = 12,042,137,500.15 - Step 5: Solve for x
x = 12,042,137,500.15/117,045.91 - Step 6: Final answer
x = 102,883.88
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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.