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Finding the Fourth Proportional to 157,850.25, 217,905.06 and 100,568.13

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Solution

The fourth proportional to 157,850.25, 217,905.06 and 100,568.13 is: 138,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,850.25 : 217,905.06 = 100,568.13 : x
  2. Step 2: Convert to fraction form
    157,850.25/217,905.06 = 100,568.13/x
  3. Step 3: Cross multiply
    157,850.25x = 217,905.06 × 100,568.13
  4. Step 4: Simplify right side
    157,850.25x = 21,914,304,401.74
  5. Step 5: Solve for x
    x = 21,914,304,401.74/157,850.25
  6. Step 6: Final answer
    x = 138,829.71

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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.