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Finding the Fourth Proportional to 137,838.72, 206,626.86 and 44,278.88

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Solution

The fourth proportional to 137,838.72, 206,626.86 and 44,278.88 is: 66,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,838.72 : 206,626.86 = 44,278.88 : x
  2. Step 2: Convert to fraction form
    137,838.72/206,626.86 = 44,278.88/x
  3. Step 3: Cross multiply
    137,838.72x = 206,626.86 × 44,278.88
  4. Step 4: Simplify right side
    137,838.72x = 9,149,205,938.72
  5. Step 5: Solve for x
    x = 9,149,205,938.72/137,838.72
  6. Step 6: Final answer
    x = 66,376.17

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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.