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Finding the Fourth Proportional to 129,753.76, 179,059.92 and 73,164.80

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Solution

The fourth proportional to 129,753.76, 179,059.92 and 73,164.80 is: 100,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,753.76 : 179,059.92 = 73,164.80 : x
  2. Step 2: Convert to fraction form
    129,753.76/179,059.92 = 73,164.80/x
  3. Step 3: Cross multiply
    129,753.76x = 179,059.92 × 73,164.80
  4. Step 4: Simplify right side
    129,753.76x = 13,100,883,234.82
  5. Step 5: Solve for x
    x = 13,100,883,234.82/129,753.76
  6. Step 6: Final answer
    x = 100,967.27

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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.