Home / 129,910.62-179,136.16-112,767.96

Finding the Fourth Proportional to 129,910.62, 179,136.16 and 112,767.96

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Solution

The fourth proportional to 129,910.62, 179,136.16 and 112,767.96 is: 155,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,910.62 : 179,136.16 = 112,767.96 : x
  2. Step 2: Convert to fraction form
    129,910.62/179,136.16 = 112,767.96/x
  3. Step 3: Cross multiply
    129,910.62x = 179,136.16 × 112,767.96
  4. Step 4: Simplify right side
    129,910.62x = 20,200,819,325.43
  5. Step 5: Solve for x
    x = 20,200,819,325.43/129,910.62
  6. Step 6: Final answer
    x = 155,497.83

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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.