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Finding the Fourth Proportional to 129,520.64, 194,308.56 and 73,387.64

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Solution

The fourth proportional to 129,520.64, 194,308.56 and 73,387.64 is: 110,097.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,520.64 : 194,308.56 = 73,387.64 : x
  2. Step 2: Convert to fraction form
    129,520.64/194,308.56 = 73,387.64/x
  3. Step 3: Cross multiply
    129,520.64x = 194,308.56 × 73,387.64
  4. Step 4: Simplify right side
    129,520.64x = 14,259,846,650.20
  5. Step 5: Solve for x
    x = 14,259,846,650.20/129,520.64
  6. Step 6: Final answer
    x = 110,097.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.