Home / 87,336.20-131,004.30-77,659.40

Finding the Fourth Proportional to 87,336.20, 131,004.30 and 77,659.40

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Solution

The fourth proportional to 87,336.20, 131,004.30 and 77,659.40 is: 116,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,336.20 : 131,004.30 = 77,659.40 : x
  2. Step 2: Convert to fraction form
    87,336.20/131,004.30 = 77,659.40/x
  3. Step 3: Cross multiply
    87,336.20x = 131,004.30 × 77,659.40
  4. Step 4: Simplify right side
    87,336.20x = 10,173,715,335.42
  5. Step 5: Solve for x
    x = 10,173,715,335.42/87,336.20
  6. Step 6: Final answer
    x = 116,489.10

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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.