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Finding the Fourth Proportional to 129,458.40, 194,108.40 and 50,481.60

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Solution

The fourth proportional to 129,458.40, 194,108.40 and 50,481.60 is: 75,691.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,458.40 : 194,108.40 = 50,481.60 : x
  2. Step 2: Convert to fraction form
    129,458.40/194,108.40 = 50,481.60/x
  3. Step 3: Cross multiply
    129,458.40x = 194,108.40 × 50,481.60
  4. Step 4: Simplify right side
    129,458.40x = 9,798,902,605.44
  5. Step 5: Solve for x
    x = 9,798,902,605.44/129,458.40
  6. Step 6: Final answer
    x = 75,691.52

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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.