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Finding the Fourth Proportional to 129,737.48, 179,042.76 and 73,147.64

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Solution

The fourth proportional to 129,737.48, 179,042.76 and 73,147.64 is: 100,946.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,737.48 : 179,042.76 = 73,147.64 : x
  2. Step 2: Convert to fraction form
    129,737.48/179,042.76 = 73,147.64/x
  3. Step 3: Cross multiply
    129,737.48x = 179,042.76 × 73,147.64
  4. Step 4: Simplify right side
    129,737.48x = 13,096,555,353.09
  5. Step 5: Solve for x
    x = 13,096,555,353.09/129,737.48
  6. Step 6: Final answer
    x = 100,946.58

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1.5x scale

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.