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Finding the Fourth Proportional to 125.34, 171.46 and 124.82

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Solution

The fourth proportional to 125.34, 171.46 and 124.82 is: 170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.34 : 171.46 = 124.82 : x
  2. Step 2: Convert to fraction form
    125.34/171.46 = 124.82/x
  3. Step 3: Cross multiply
    125.34x = 171.46 × 124.82
  4. Step 4: Simplify right side
    125.34x = 21,401.64
  5. Step 5: Solve for x
    x = 21,401.64/125.34
  6. Step 6: Final answer
    x = 170.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.