Home / 87,360.30-131,040.45-80,601.90

Finding the Fourth Proportional to 87,360.30, 131,040.45 and 80,601.90

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Solution

The fourth proportional to 87,360.30, 131,040.45 and 80,601.90 is: 120,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,360.30 : 131,040.45 = 80,601.90 : x
  2. Step 2: Convert to fraction form
    87,360.30/131,040.45 = 80,601.90/x
  3. Step 3: Cross multiply
    87,360.30x = 131,040.45 × 80,601.90
  4. Step 4: Simplify right side
    87,360.30x = 10,562,109,246.86
  5. Step 5: Solve for x
    x = 10,562,109,246.86/87,360.30
  6. Step 6: Final answer
    x = 120,902.85

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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.