Home / 132,845.80-198,999.90-82,772.20

Finding the Fourth Proportional to 132,845.80, 198,999.90 and 82,772.20

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Solution

The fourth proportional to 132,845.80, 198,999.90 and 82,772.20 is: 123,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,845.80 : 198,999.90 = 82,772.20 : x
  2. Step 2: Convert to fraction form
    132,845.80/198,999.90 = 82,772.20/x
  3. Step 3: Cross multiply
    132,845.80x = 198,999.90 × 82,772.20
  4. Step 4: Simplify right side
    132,845.80x = 16,471,659,522.78
  5. Step 5: Solve for x
    x = 16,471,659,522.78/132,845.80
  6. Step 6: Final answer
    x = 123,990.82

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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.