Finding the Fourth Proportional to 113,423.20, 156,529.20 and 63,125.44
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Solution
The fourth proportional to 113,423.20, 156,529.20 and 63,125.44 is: 87,115.99
Step by Step Solution
- Step 1: Write the proportion equation
113,423.20 : 156,529.20 = 63,125.44 : x - Step 2: Convert to fraction form
113,423.20/156,529.20 = 63,125.44/x - Step 3: Cross multiply
113,423.20x = 156,529.20 × 63,125.44 - Step 4: Simplify right side
113,423.20x = 9,880,974,622.85 - Step 5: Solve for x
x = 9,880,974,622.85/113,423.20 - Step 6: Final answer
x = 87,115.99
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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.