Home / 87,549.30-131,323.95-86,237.10

Finding the Fourth Proportional to 87,549.30, 131,323.95 and 86,237.10

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Solution

The fourth proportional to 87,549.30, 131,323.95 and 86,237.10 is: 129,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,549.30 : 131,323.95 = 86,237.10 : x
  2. Step 2: Convert to fraction form
    87,549.30/131,323.95 = 86,237.10/x
  3. Step 3: Cross multiply
    87,549.30x = 131,323.95 × 86,237.10
  4. Step 4: Simplify right side
    87,549.30x = 11,324,996,608.55
  5. Step 5: Solve for x
    x = 11,324,996,608.55/87,549.30
  6. Step 6: Final answer
    x = 129,355.65

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Similar ratio
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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.