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Finding the Fourth Proportional to 125.91, 173.34 and 125.46

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Solution

The fourth proportional to 125.91, 173.34 and 125.46 is: 172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.91 : 173.34 = 125.46 : x
  2. Step 2: Convert to fraction form
    125.91/173.34 = 125.46/x
  3. Step 3: Cross multiply
    125.91x = 173.34 × 125.46
  4. Step 4: Simplify right side
    125.91x = 21,747.24
  5. Step 5: Solve for x
    x = 21,747.24/125.91
  6. Step 6: Final answer
    x = 172.72

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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.