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Finding the Fourth Proportional to 103,998.70, 143,517.72 and 56,251.92

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Solution

The fourth proportional to 103,998.70, 143,517.72 and 56,251.92 is: 77,627.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,998.70 : 143,517.72 = 56,251.92 : x
  2. Step 2: Convert to fraction form
    103,998.70/143,517.72 = 56,251.92/x
  3. Step 3: Cross multiply
    103,998.70x = 143,517.72 × 56,251.92
  4. Step 4: Simplify right side
    103,998.70x = 8,073,147,304.02
  5. Step 5: Solve for x
    x = 8,073,147,304.02/103,998.70
  6. Step 6: Final answer
    x = 77,627.39

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1.5x scale

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.