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Finding the Fourth Proportional to 159.32, 220.14 and 124.43

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Solution

The fourth proportional to 159.32, 220.14 and 124.43 is: 171.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.32 : 220.14 = 124.43 : x
  2. Step 2: Convert to fraction form
    159.32/220.14 = 124.43/x
  3. Step 3: Cross multiply
    159.32x = 220.14 × 124.43
  4. Step 4: Simplify right side
    159.32x = 27,392.57
  5. Step 5: Solve for x
    x = 27,392.57/159.32
  6. Step 6: Final answer
    x = 171.94

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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.