Home / 149,902.11-206,872.92-86,249.61

Finding the Fourth Proportional to 149,902.11, 206,872.92 and 86,249.61

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Solution

The fourth proportional to 149,902.11, 206,872.92 and 86,249.61 is: 119,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,902.11 : 206,872.92 = 86,249.61 : x
  2. Step 2: Convert to fraction form
    149,902.11/206,872.92 = 86,249.61/x
  3. Step 3: Cross multiply
    149,902.11x = 206,872.92 × 86,249.61
  4. Step 4: Simplify right side
    149,902.11x = 17,842,708,669.56
  5. Step 5: Solve for x
    x = 17,842,708,669.56/149,902.11
  6. Step 6: Final answer
    x = 119,029.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.