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Finding the Fourth Proportional to 126.50, 174.35 and 93.89

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Solution

The fourth proportional to 126.50, 174.35 and 93.89 is: 129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.50 : 174.35 = 93.89 : x
  2. Step 2: Convert to fraction form
    126.50/174.35 = 93.89/x
  3. Step 3: Cross multiply
    126.50x = 174.35 × 93.89
  4. Step 4: Simplify right side
    126.50x = 16,370.39
  5. Step 5: Solve for x
    x = 16,370.39/126.50
  6. Step 6: Final answer
    x = 129.42

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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.