Finding the Fourth Proportional to 115,545.60, 173,203.20 and 53,107.20
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Solution
The fourth proportional to 115,545.60, 173,203.20 and 53,107.20 is: 79,607.85
Step by Step Solution
- Step 1: Write the proportion equation
115,545.60 : 173,203.20 = 53,107.20 : x - Step 2: Convert to fraction form
115,545.60/173,203.20 = 53,107.20/x - Step 3: Cross multiply
115,545.60x = 173,203.20 × 53,107.20 - Step 4: Simplify right side
115,545.60x = 9,198,336,983.04 - Step 5: Solve for x
x = 9,198,336,983.04/115,545.60 - Step 6: Final answer
x = 79,607.85
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1.5x scale
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.