Home / 258,489.13-387,761.51-108,744.65

Finding the Fourth Proportional to 258,489.13, 387,761.51 and 108,744.65

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Solution

The fourth proportional to 258,489.13, 387,761.51 and 108,744.65 is: 163,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,489.13 : 387,761.51 = 108,744.65 : x
  2. Step 2: Convert to fraction form
    258,489.13/387,761.51 = 108,744.65/x
  3. Step 3: Cross multiply
    258,489.13x = 387,761.51 × 108,744.65
  4. Step 4: Simplify right side
    258,489.13x = 42,166,989,688.42
  5. Step 5: Solve for x
    x = 42,166,989,688.42/258,489.13
  6. Step 6: Final answer
    x = 163,128.68

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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.