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Finding the Fourth Proportional to 125,438.66, 173,105.45 and 68,077.97

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Solution

The fourth proportional to 125,438.66, 173,105.45 and 68,077.97 is: 93,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,438.66 : 173,105.45 = 68,077.97 : x
  2. Step 2: Convert to fraction form
    125,438.66/173,105.45 = 68,077.97/x
  3. Step 3: Cross multiply
    125,438.66x = 173,105.45 × 68,077.97
  4. Step 4: Simplify right side
    125,438.66x = 11,784,667,631.94
  5. Step 5: Solve for x
    x = 11,784,667,631.94/125,438.66
  6. Step 6: Final answer
    x = 93,947.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.