Home / 87,728.28-131,286.24-71,748.60

Finding the Fourth Proportional to 87,728.28, 131,286.24 and 71,748.60

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Solution

The fourth proportional to 87,728.28, 131,286.24 and 71,748.60 is: 107,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,728.28 : 131,286.24 = 71,748.60 : x
  2. Step 2: Convert to fraction form
    87,728.28/131,286.24 = 71,748.60/x
  3. Step 3: Cross multiply
    87,728.28x = 131,286.24 × 71,748.60
  4. Step 4: Simplify right side
    87,728.28x = 9,419,603,919.26
  5. Step 5: Solve for x
    x = 9,419,603,919.26/87,728.28
  6. Step 6: Final answer
    x = 107,372.49

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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.