Finding the Fourth Proportional to 115,246.26, 158,934.14 and 79,000.38
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Solution
The fourth proportional to 115,246.26, 158,934.14 and 79,000.38 is: 108,948.07
Step by Step Solution
- Step 1: Write the proportion equation
115,246.26 : 158,934.14 = 79,000.38 : x - Step 2: Convert to fraction form
115,246.26/158,934.14 = 79,000.38/x - Step 3: Cross multiply
115,246.26x = 158,934.14 × 79,000.38 - Step 4: Simplify right side
115,246.26x = 12,555,857,454.97 - Step 5: Solve for x
x = 12,555,857,454.97/115,246.26 - Step 6: Final answer
x = 108,948.07
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1.5x scale
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.