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Finding the Fourth Proportional to 129,259.60, 193,810.02 and 50,281.78

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Solution

The fourth proportional to 129,259.60, 193,810.02 and 50,281.78 is: 75,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,259.60 : 193,810.02 = 50,281.78 : x
  2. Step 2: Convert to fraction form
    129,259.60/193,810.02 = 50,281.78/x
  3. Step 3: Cross multiply
    129,259.60x = 193,810.02 × 50,281.78
  4. Step 4: Simplify right side
    129,259.60x = 9,745,112,787.44
  5. Step 5: Solve for x
    x = 9,745,112,787.44/129,259.60
  6. Step 6: Final answer
    x = 75,391.79

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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.