Home / 187,680.68-258,999.38-102,800.78

Finding the Fourth Proportional to 187,680.68, 258,999.38 and 102,800.78

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Solution

The fourth proportional to 187,680.68, 258,999.38 and 102,800.78 is: 141,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,680.68 : 258,999.38 = 102,800.78 : x
  2. Step 2: Convert to fraction form
    187,680.68/258,999.38 = 102,800.78/x
  3. Step 3: Cross multiply
    187,680.68x = 258,999.38 × 102,800.78
  4. Step 4: Simplify right side
    187,680.68x = 26,625,338,283.52
  5. Step 5: Solve for x
    x = 26,625,338,283.52/187,680.68
  6. Step 6: Final answer
    x = 141,865.10

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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.