Finding the Fourth Proportional to 87,787.30, 131,486.55 and 72,235.30
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Solution
The fourth proportional to 87,787.30, 131,486.55 and 72,235.30 is: 108,192.99
Step by Step Solution
- Step 1: Write the proportion equation
87,787.30 : 131,486.55 = 72,235.30 : x - Step 2: Convert to fraction form
87,787.30/131,486.55 = 72,235.30/x - Step 3: Cross multiply
87,787.30x = 131,486.55 × 72,235.30 - Step 4: Simplify right side
87,787.30x = 9,497,970,385.22 - Step 5: Solve for x
x = 9,497,970,385.22/87,787.30 - Step 6: Final answer
x = 108,192.99
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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.