Home / 87,399.20-131,098.80-73,402.40

Finding the Fourth Proportional to 87,399.20, 131,098.80 and 73,402.40

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Solution

The fourth proportional to 87,399.20, 131,098.80 and 73,402.40 is: 110,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399.20 : 131,098.80 = 73,402.40 : x
  2. Step 2: Convert to fraction form
    87,399.20/131,098.80 = 73,402.40/x
  3. Step 3: Cross multiply
    87,399.20x = 131,098.80 × 73,402.40
  4. Step 4: Simplify right side
    87,399.20x = 9,622,966,557.12
  5. Step 5: Solve for x
    x = 9,622,966,557.12/87,399.20
  6. Step 6: Final answer
    x = 110,103.60

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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.