Home / 87,618.20-131,427.30-66,882.20

Finding the Fourth Proportional to 87,618.20, 131,427.30 and 66,882.20

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Solution

The fourth proportional to 87,618.20, 131,427.30 and 66,882.20 is: 100,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,618.20 : 131,427.30 = 66,882.20 : x
  2. Step 2: Convert to fraction form
    87,618.20/131,427.30 = 66,882.20/x
  3. Step 3: Cross multiply
    87,618.20x = 131,427.30 × 66,882.20
  4. Step 4: Simplify right side
    87,618.20x = 8,790,146,964.06
  5. Step 5: Solve for x
    x = 8,790,146,964.06/87,618.20
  6. Step 6: Final answer
    x = 100,323.30

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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.