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Finding the Fourth Proportional to 125.88, 174.39 and 123.04

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Solution

The fourth proportional to 125.88, 174.39 and 123.04 is: 170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.88 : 174.39 = 123.04 : x
  2. Step 2: Convert to fraction form
    125.88/174.39 = 123.04/x
  3. Step 3: Cross multiply
    125.88x = 174.39 × 123.04
  4. Step 4: Simplify right side
    125.88x = 21,456.95
  5. Step 5: Solve for x
    x = 21,456.95/125.88
  6. Step 6: Final answer
    x = 170.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.