Home / 247,960.20-371,940.30-81,726.60

Finding the Fourth Proportional to 247,960.20, 371,940.30 and 81,726.60

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Solution

The fourth proportional to 247,960.20, 371,940.30 and 81,726.60 is: 122,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,960.20 : 371,940.30 = 81,726.60 : x
  2. Step 2: Convert to fraction form
    247,960.20/371,940.30 = 81,726.60/x
  3. Step 3: Cross multiply
    247,960.20x = 371,940.30 × 81,726.60
  4. Step 4: Simplify right side
    247,960.20x = 30,397,416,121.98
  5. Step 5: Solve for x
    x = 30,397,416,121.98/247,960.20
  6. Step 6: Final answer
    x = 122,589.90

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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.