Home / 187,113.11-258,215.65-102,230.78

Finding the Fourth Proportional to 187,113.11, 258,215.65 and 102,230.78

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Solution

The fourth proportional to 187,113.11, 258,215.65 and 102,230.78 is: 141,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,113.11 : 258,215.65 = 102,230.78 : x
  2. Step 2: Convert to fraction form
    187,113.11/258,215.65 = 102,230.78/x
  3. Step 3: Cross multiply
    187,113.11x = 258,215.65 × 102,230.78
  4. Step 4: Simplify right side
    187,113.11x = 26,397,585,761.05
  5. Step 5: Solve for x
    x = 26,397,585,761.05/187,113.11
  6. Step 6: Final answer
    x = 141,078.23

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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.