Home / 131,990.20-197,726.10-89,999.80

Finding the Fourth Proportional to 131,990.20, 197,726.10 and 89,999.80

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Solution

The fourth proportional to 131,990.20, 197,726.10 and 89,999.80 is: 134,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,990.20 : 197,726.10 = 89,999.80 : x
  2. Step 2: Convert to fraction form
    131,990.20/197,726.10 = 89,999.80/x
  3. Step 3: Cross multiply
    131,990.20x = 197,726.10 × 89,999.80
  4. Step 4: Simplify right side
    131,990.20x = 17,795,309,454.78
  5. Step 5: Solve for x
    x = 17,795,309,454.78/131,990.20
  6. Step 6: Final answer
    x = 134,822.96

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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.