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Finding the Fourth Proportional to 171.62, 236.86 and 101.71

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Solution

The fourth proportional to 171.62, 236.86 and 101.71 is: 140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.62 : 236.86 = 101.71 : x
  2. Step 2: Convert to fraction form
    171.62/236.86 = 101.71/x
  3. Step 3: Cross multiply
    171.62x = 236.86 × 101.71
  4. Step 4: Simplify right side
    171.62x = 24,091.03
  5. Step 5: Solve for x
    x = 24,091.03/171.62
  6. Step 6: Final answer
    x = 140.37

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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.