Home / 138,042.43-206,932.42-87,982.00

Finding the Fourth Proportional to 138,042.43, 206,932.42 and 87,982.00

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Solution

The fourth proportional to 138,042.43, 206,932.42 and 87,982.00 is: 131,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,042.43 : 206,932.42 = 87,982.00 : x
  2. Step 2: Convert to fraction form
    138,042.43/206,932.42 = 87,982.00/x
  3. Step 3: Cross multiply
    138,042.43x = 206,932.42 × 87,982.00
  4. Step 4: Simplify right side
    138,042.43x = 18,206,327,769.09
  5. Step 5: Solve for x
    x = 18,206,327,769.09/138,042.43
  6. Step 6: Final answer
    x = 131,889.36

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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.