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Finding the Fourth Proportional to 171.86, 237.26 and 113.81

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Solution

The fourth proportional to 171.86, 237.26 and 113.81 is: 157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.86 : 237.26 = 113.81 : x
  2. Step 2: Convert to fraction form
    171.86/237.26 = 113.81/x
  3. Step 3: Cross multiply
    171.86x = 237.26 × 113.81
  4. Step 4: Simplify right side
    171.86x = 27,000.81
  5. Step 5: Solve for x
    x = 27,000.81/171.86
  6. Step 6: Final answer
    x = 157.11

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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.