Home / 87,467.40-131,201.10-80,209.80

Finding the Fourth Proportional to 87,467.40, 131,201.10 and 80,209.80

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Solution

The fourth proportional to 87,467.40, 131,201.10 and 80,209.80 is: 120,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,467.40 : 131,201.10 = 80,209.80 : x
  2. Step 2: Convert to fraction form
    87,467.40/131,201.10 = 80,209.80/x
  3. Step 3: Cross multiply
    87,467.40x = 131,201.10 × 80,209.80
  4. Step 4: Simplify right side
    87,467.40x = 10,523,613,990.78
  5. Step 5: Solve for x
    x = 10,523,613,990.78/87,467.40
  6. Step 6: Final answer
    x = 120,314.70

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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.