Home / 187,661.19-258,976.20-102,778.26

Finding the Fourth Proportional to 187,661.19, 258,976.20 and 102,778.26

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Solution

The fourth proportional to 187,661.19, 258,976.20 and 102,778.26 is: 141,836.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,661.19 : 258,976.20 = 102,778.26 : x
  2. Step 2: Convert to fraction form
    187,661.19/258,976.20 = 102,778.26/x
  3. Step 3: Cross multiply
    187,661.19x = 258,976.20 × 102,778.26
  4. Step 4: Simplify right side
    187,661.19x = 26,617,123,217.41
  5. Step 5: Solve for x
    x = 26,617,123,217.41/187,661.19
  6. Step 6: Final answer
    x = 141,836.06

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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.