Home / 187,719.71-259,054.11-102,836.78

Finding the Fourth Proportional to 187,719.71, 259,054.11 and 102,836.78

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Solution

The fourth proportional to 187,719.71, 259,054.11 and 102,836.78 is: 141,915.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,719.71 : 259,054.11 = 102,836.78 : x
  2. Step 2: Convert to fraction form
    187,719.71/259,054.11 = 102,836.78/x
  3. Step 3: Cross multiply
    187,719.71x = 259,054.11 × 102,836.78
  4. Step 4: Simplify right side
    187,719.71x = 26,640,290,518.17
  5. Step 5: Solve for x
    x = 26,640,290,518.17/187,719.71
  6. Step 6: Final answer
    x = 141,915.26

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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.