Home / 87,449.40-131,238.90-64,121.40

Finding the Fourth Proportional to 87,449.40, 131,238.90 and 64,121.40

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Solution

The fourth proportional to 87,449.40, 131,238.90 and 64,121.40 is: 96,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,449.40 : 131,238.90 = 64,121.40 : x
  2. Step 2: Convert to fraction form
    87,449.40/131,238.90 = 64,121.40/x
  3. Step 3: Cross multiply
    87,449.40x = 131,238.90 × 64,121.40
  4. Step 4: Simplify right side
    87,449.40x = 8,415,222,002.46
  5. Step 5: Solve for x
    x = 8,415,222,002.46/87,449.40
  6. Step 6: Final answer
    x = 96,229.61

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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.