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Finding the Fourth Proportional to 125.01, 171.25 and 122.18

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Solution

The fourth proportional to 125.01, 171.25 and 122.18 is: 167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.01 : 171.25 = 122.18 : x
  2. Step 2: Convert to fraction form
    125.01/171.25 = 122.18/x
  3. Step 3: Cross multiply
    125.01x = 171.25 × 122.18
  4. Step 4: Simplify right side
    125.01x = 20,922.16
  5. Step 5: Solve for x
    x = 20,922.16/125.01
  6. Step 6: Final answer
    x = 167.36

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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.