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Finding the Fourth Proportional to 129,787.70, 194,712.89 and 48,735.39

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Solution

The fourth proportional to 129,787.70, 194,712.89 and 48,735.39 is: 73,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,787.70 : 194,712.89 = 48,735.39 : x
  2. Step 2: Convert to fraction form
    129,787.70/194,712.89 = 48,735.39/x
  3. Step 3: Cross multiply
    129,787.70x = 194,712.89 × 48,735.39
  4. Step 4: Simplify right side
    129,787.70x = 9,489,408,632.18
  5. Step 5: Solve for x
    x = 9,489,408,632.18/129,787.70
  6. Step 6: Final answer
    x = 73,114.85

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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.