Home / 187,112.25-258,220.38-102,234.78

Finding the Fourth Proportional to 187,112.25, 258,220.38 and 102,234.78

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Solution

The fourth proportional to 187,112.25, 258,220.38 and 102,234.78 is: 141,086.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,112.25 : 258,220.38 = 102,234.78 : x
  2. Step 2: Convert to fraction form
    187,112.25/258,220.38 = 102,234.78/x
  3. Step 3: Cross multiply
    187,112.25x = 258,220.38 × 102,234.78
  4. Step 4: Simplify right side
    187,112.25x = 26,399,103,740.82
  5. Step 5: Solve for x
    x = 26,399,103,740.82/187,112.25
  6. Step 6: Final answer
    x = 141,086.99

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1.5x scale

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.