Finding the Fourth Proportional to 87,156.60, 120,234.24 and 55,269.96
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Solution
The fourth proportional to 87,156.60, 120,234.24 and 55,269.96 is: 76,245.99
Step by Step Solution
- Step 1: Write the proportion equation
87,156.60 : 120,234.24 = 55,269.96 : x - Step 2: Convert to fraction form
87,156.60/120,234.24 = 55,269.96/x - Step 3: Cross multiply
87,156.60x = 120,234.24 × 55,269.96 - Step 4: Simplify right side
87,156.60x = 6,645,341,635.43 - Step 5: Solve for x
x = 6,645,341,635.43/87,156.60 - Step 6: Final answer
x = 76,245.99
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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.