Home / 87,875.20-131,505.60-80,502.40

Finding the Fourth Proportional to 87,875.20, 131,505.60 and 80,502.40

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Solution

The fourth proportional to 87,875.20, 131,505.60 and 80,502.40 is: 120,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,875.20 : 131,505.60 = 80,502.40 : x
  2. Step 2: Convert to fraction form
    87,875.20/131,505.60 = 80,502.40/x
  3. Step 3: Cross multiply
    87,875.20x = 131,505.60 × 80,502.40
  4. Step 4: Simplify right side
    87,875.20x = 10,586,516,413.44
  5. Step 5: Solve for x
    x = 10,586,516,413.44/87,875.20
  6. Step 6: Final answer
    x = 120,472.17

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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.