Finding the Fourth Proportional to 115,920.20, 173,829.10 and 53,609.80
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Solution
The fourth proportional to 115,920.20, 173,829.10 and 53,609.80 is: 80,391.02
Step by Step Solution
- Step 1: Write the proportion equation
115,920.20 : 173,829.10 = 53,609.80 : x - Step 2: Convert to fraction form
115,920.20/173,829.10 = 53,609.80/x - Step 3: Cross multiply
115,920.20x = 173,829.10 × 53,609.80 - Step 4: Simplify right side
115,920.20x = 9,318,943,285.18 - Step 5: Solve for x
x = 9,318,943,285.18/115,920.20 - Step 6: Final answer
x = 80,391.02
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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.