Home / 87,353.92-131,140.56-72,741.76

Finding the Fourth Proportional to 87,353.92, 131,140.56 and 72,741.76

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Solution

The fourth proportional to 87,353.92, 131,140.56 and 72,741.76 is: 109,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,353.92 : 131,140.56 = 72,741.76 : x
  2. Step 2: Convert to fraction form
    87,353.92/131,140.56 = 72,741.76/x
  3. Step 3: Cross multiply
    87,353.92x = 131,140.56 × 72,741.76
  4. Step 4: Simplify right side
    87,353.92x = 9,539,395,141.79
  5. Step 5: Solve for x
    x = 9,539,395,141.79/87,353.92
  6. Step 6: Final answer
    x = 109,203.97

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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.