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Finding the Fourth Proportional to 157,310.53, 217,081.52 and 91,905.42

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Solution

The fourth proportional to 157,310.53, 217,081.52 and 91,905.42 is: 126,825.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,310.53 : 217,081.52 = 91,905.42 : x
  2. Step 2: Convert to fraction form
    157,310.53/217,081.52 = 91,905.42/x
  3. Step 3: Cross multiply
    157,310.53x = 217,081.52 × 91,905.42
  4. Step 4: Simplify right side
    157,310.53x = 19,950,969,105.57
  5. Step 5: Solve for x
    x = 19,950,969,105.57/157,310.53
  6. Step 6: Final answer
    x = 126,825.39

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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.