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Finding the Fourth Proportional to 124.14, 171.35 and 108.75

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Solution

The fourth proportional to 124.14, 171.35 and 108.75 is: 150.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.14 : 171.35 = 108.75 : x
  2. Step 2: Convert to fraction form
    124.14/171.35 = 108.75/x
  3. Step 3: Cross multiply
    124.14x = 171.35 × 108.75
  4. Step 4: Simplify right side
    124.14x = 18,634.31
  5. Step 5: Solve for x
    x = 18,634.31/124.14
  6. Step 6: Final answer
    x = 150.11

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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.