Home / 187,270.13-258,432.78-102,387.20

Finding the Fourth Proportional to 187,270.13, 258,432.78 and 102,387.20

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Solution

The fourth proportional to 187,270.13, 258,432.78 and 102,387.20 is: 141,294.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,270.13 : 258,432.78 = 102,387.20 : x
  2. Step 2: Convert to fraction form
    187,270.13/258,432.78 = 102,387.20/x
  3. Step 3: Cross multiply
    187,270.13x = 258,432.78 × 102,387.20
  4. Step 4: Simplify right side
    187,270.13x = 26,460,207,440.25
  5. Step 5: Solve for x
    x = 26,460,207,440.25/187,270.13
  6. Step 6: Final answer
    x = 141,294.33

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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.