Home / 87,635.40-131,453.10-86,713.80

Finding the Fourth Proportional to 87,635.40, 131,453.10 and 86,713.80

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Solution

The fourth proportional to 87,635.40, 131,453.10 and 86,713.80 is: 130,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,635.40 : 131,453.10 = 86,713.80 : x
  2. Step 2: Convert to fraction form
    87,635.40/131,453.10 = 86,713.80/x
  3. Step 3: Cross multiply
    87,635.40x = 131,453.10 × 86,713.80
  4. Step 4: Simplify right side
    87,635.40x = 11,398,797,822.78
  5. Step 5: Solve for x
    x = 11,398,797,822.78/87,635.40
  6. Step 6: Final answer
    x = 130,070.70

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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.