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Finding the Fourth Proportional to 129,753.39, 179,059.71 and 73,164.78

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Solution

The fourth proportional to 129,753.39, 179,059.71 and 73,164.78 is: 100,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,753.39 : 179,059.71 = 73,164.78 : x
  2. Step 2: Convert to fraction form
    129,753.39/179,059.71 = 73,164.78/x
  3. Step 3: Cross multiply
    129,753.39x = 179,059.71 × 73,164.78
  4. Step 4: Simplify right side
    129,753.39x = 13,100,864,289.01
  5. Step 5: Solve for x
    x = 13,100,864,289.01/129,753.39
  6. Step 6: Final answer
    x = 100,967.41

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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.