Home / 137,939.20-206,908.80-54,833.20

Finding the Fourth Proportional to 137,939.20, 206,908.80 and 54,833.20

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Solution

The fourth proportional to 137,939.20, 206,908.80 and 54,833.20 is: 82,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,939.20 : 206,908.80 = 54,833.20 : x
  2. Step 2: Convert to fraction form
    137,939.20/206,908.80 = 54,833.20/x
  3. Step 3: Cross multiply
    137,939.20x = 206,908.80 × 54,833.20
  4. Step 4: Simplify right side
    137,939.20x = 11,345,471,612.16
  5. Step 5: Solve for x
    x = 11,345,471,612.16/137,939.20
  6. Step 6: Final answer
    x = 82,249.80

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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.