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Finding the Fourth Proportional to 171.59, 236.86 and 106.11

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Solution

The fourth proportional to 171.59, 236.86 and 106.11 is: 146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.59 : 236.86 = 106.11 : x
  2. Step 2: Convert to fraction form
    171.59/236.86 = 106.11/x
  3. Step 3: Cross multiply
    171.59x = 236.86 × 106.11
  4. Step 4: Simplify right side
    171.59x = 25,132.95
  5. Step 5: Solve for x
    x = 25,132.95/171.59
  6. Step 6: Final answer
    x = 146.48

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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.