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Finding the Fourth Proportional to 117,438.52, 161,841.43 and 115,279.27

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Solution

The fourth proportional to 117,438.52, 161,841.43 and 115,279.27 is: 158,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,438.52 : 161,841.43 = 115,279.27 : x
  2. Step 2: Convert to fraction form
    117,438.52/161,841.43 = 115,279.27/x
  3. Step 3: Cross multiply
    117,438.52x = 161,841.43 × 115,279.27
  4. Step 4: Simplify right side
    117,438.52x = 18,656,961,906.16
  5. Step 5: Solve for x
    x = 18,656,961,906.16/117,438.52
  6. Step 6: Final answer
    x = 158,865.78

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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.