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Finding the Fourth Proportional to 129,414.40, 194,042.40 and 50,437.60

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Solution

The fourth proportional to 129,414.40, 194,042.40 and 50,437.60 is: 75,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,414.40 : 194,042.40 = 50,437.60 : x
  2. Step 2: Convert to fraction form
    129,414.40/194,042.40 = 50,437.60/x
  3. Step 3: Cross multiply
    129,414.40x = 194,042.40 × 50,437.60
  4. Step 4: Simplify right side
    129,414.40x = 9,787,032,954.24
  5. Step 5: Solve for x
    x = 9,787,032,954.24/129,414.40
  6. Step 6: Final answer
    x = 75,625.53

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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.