Finding the Fourth Proportional to 115,036.05, 172,582.70 and 91,432.65
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Solution
The fourth proportional to 115,036.05, 172,582.70 and 91,432.65 is: 137,171.72
Step by Step Solution
- Step 1: Write the proportion equation
115,036.05 : 172,582.70 = 91,432.65 : x - Step 2: Convert to fraction form
115,036.05/172,582.70 = 91,432.65/x - Step 3: Cross multiply
115,036.05x = 172,582.70 × 91,432.65 - Step 4: Simplify right side
115,036.05x = 15,779,693,147.99 - Step 5: Solve for x
x = 15,779,693,147.99/115,036.05 - Step 6: Final answer
x = 137,171.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.