Home / 129,909.62-179,134.78-112,766.96

Finding the Fourth Proportional to 129,909.62, 179,134.78 and 112,766.96

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Solution

The fourth proportional to 129,909.62, 179,134.78 and 112,766.96 is: 155,496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,909.62 : 179,134.78 = 112,766.96 : x
  2. Step 2: Convert to fraction form
    129,909.62/179,134.78 = 112,766.96/x
  3. Step 3: Cross multiply
    129,909.62x = 179,134.78 × 112,766.96
  4. Step 4: Simplify right side
    129,909.62x = 20,200,484,285.83
  5. Step 5: Solve for x
    x = 20,200,484,285.83/129,909.62
  6. Step 6: Final answer
    x = 155,496.44

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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.