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Finding the Fourth Proportional to 129,751.53, 179,057.13 and 73,162.89

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Solution

The fourth proportional to 129,751.53, 179,057.13 and 73,162.89 is: 100,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,751.53 : 179,057.13 = 73,162.89 : x
  2. Step 2: Convert to fraction form
    129,751.53/179,057.13 = 73,162.89/x
  3. Step 3: Cross multiply
    129,751.53x = 179,057.13 × 73,162.89
  4. Step 4: Simplify right side
    129,751.53x = 13,100,337,105.91
  5. Step 5: Solve for x
    x = 13,100,337,105.91/129,751.53
  6. Step 6: Final answer
    x = 100,964.80

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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.