Home / 87,942.30-131,719.05-72,390.30

Finding the Fourth Proportional to 87,942.30, 131,719.05 and 72,390.30

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Solution

The fourth proportional to 87,942.30, 131,719.05 and 72,390.30 is: 108,425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.30 : 131,719.05 = 72,390.30 : x
  2. Step 2: Convert to fraction form
    87,942.30/131,719.05 = 72,390.30/x
  3. Step 3: Cross multiply
    87,942.30x = 131,719.05 × 72,390.30
  4. Step 4: Simplify right side
    87,942.30x = 9,535,181,545.22
  5. Step 5: Solve for x
    x = 9,535,181,545.22/87,942.30
  6. Step 6: Final answer
    x = 108,425.43

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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.