Home / 247,972.20-371,958.30-81,738.60

Finding the Fourth Proportional to 247,972.20, 371,958.30 and 81,738.60

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Solution

The fourth proportional to 247,972.20, 371,958.30 and 81,738.60 is: 122,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,972.20 : 371,958.30 = 81,738.60 : x
  2. Step 2: Convert to fraction form
    247,972.20/371,958.30 = 81,738.60/x
  3. Step 3: Cross multiply
    247,972.20x = 371,958.30 × 81,738.60
  4. Step 4: Simplify right side
    247,972.20x = 30,403,350,700.38
  5. Step 5: Solve for x
    x = 30,403,350,700.38/247,972.20
  6. Step 6: Final answer
    x = 122,607.90

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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.