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Finding the Fourth Proportional to 129,970.92, 179,349.86 and 73,387.88

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Solution

The fourth proportional to 129,970.92, 179,349.86 and 73,387.88 is: 101,269.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,970.92 : 179,349.86 = 73,387.88 : x
  2. Step 2: Convert to fraction form
    129,970.92/179,349.86 = 73,387.88/x
  3. Step 3: Cross multiply
    129,970.92x = 179,349.86 × 73,387.88
  4. Step 4: Simplify right side
    129,970.92x = 13,162,106,003.70
  5. Step 5: Solve for x
    x = 13,162,106,003.70/129,970.92
  6. Step 6: Final answer
    x = 101,269.62

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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.