Home / 258,103.38-387,135.91-108,337.62

Finding the Fourth Proportional to 258,103.38, 387,135.91 and 108,337.62

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Solution

The fourth proportional to 258,103.38, 387,135.91 and 108,337.62 is: 162,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,103.38 : 387,135.91 = 108,337.62 : x
  2. Step 2: Convert to fraction form
    258,103.38/387,135.91 = 108,337.62/x
  3. Step 3: Cross multiply
    258,103.38x = 387,135.91 × 108,337.62
  4. Step 4: Simplify right side
    258,103.38x = 41,941,383,105.93
  5. Step 5: Solve for x
    x = 41,941,383,105.93/258,103.38
  6. Step 6: Final answer
    x = 162,498.39

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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.