Home / 258,102.38-387,134.41-108,336.62

Finding the Fourth Proportional to 258,102.38, 387,134.41 and 108,336.62

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Solution

The fourth proportional to 258,102.38, 387,134.41 and 108,336.62 is: 162,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,102.38 : 387,134.41 = 108,336.62 : x
  2. Step 2: Convert to fraction form
    258,102.38/387,134.41 = 108,336.62/x
  3. Step 3: Cross multiply
    258,102.38x = 387,134.41 × 108,336.62
  4. Step 4: Simplify right side
    258,102.38x = 41,940,833,465.09
  5. Step 5: Solve for x
    x = 41,940,833,465.09/258,102.38
  6. Step 6: Final answer
    x = 162,496.89

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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.