Home / 129,778.12-179,098.86-73,191.52

Finding the Fourth Proportional to 129,778.12, 179,098.86 and 73,191.52

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Solution

The fourth proportional to 129,778.12, 179,098.86 and 73,191.52 is: 101,007.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,778.12 : 179,098.86 = 73,191.52 : x
  2. Step 2: Convert to fraction form
    129,778.12/179,098.86 = 73,191.52/x
  3. Step 3: Cross multiply
    129,778.12x = 179,098.86 × 73,191.52
  4. Step 4: Simplify right side
    129,778.12x = 13,108,517,793.67
  5. Step 5: Solve for x
    x = 13,108,517,793.67/129,778.12
  6. Step 6: Final answer
    x = 101,007.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.