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Finding the Fourth Proportional to 171.43, 236.49 and 113.23

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Solution

The fourth proportional to 171.43, 236.49 and 113.23 is: 156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.43 : 236.49 = 113.23 : x
  2. Step 2: Convert to fraction form
    171.43/236.49 = 113.23/x
  3. Step 3: Cross multiply
    171.43x = 236.49 × 113.23
  4. Step 4: Simplify right side
    171.43x = 26,777.76
  5. Step 5: Solve for x
    x = 26,777.76/171.43
  6. Step 6: Final answer
    x = 156.20

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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.