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Finding the Fourth Proportional to 103,657.38, 155,387.52 and 40,517.97

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Solution

The fourth proportional to 103,657.38, 155,387.52 and 40,517.97 is: 60,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,657.38 : 155,387.52 = 40,517.97 : x
  2. Step 2: Convert to fraction form
    103,657.38/155,387.52 = 40,517.97/x
  3. Step 3: Cross multiply
    103,657.38x = 155,387.52 × 40,517.97
  4. Step 4: Simplify right side
    103,657.38x = 6,295,986,873.73
  5. Step 5: Solve for x
    x = 6,295,986,873.73/103,657.38
  6. Step 6: Final answer
    x = 60,738.43

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1.5x scale

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.