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Finding the Fourth Proportional to 126.74, 189.35 and 110.57

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Solution

The fourth proportional to 126.74, 189.35 and 110.57 is: 165.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.74 : 189.35 = 110.57 : x
  2. Step 2: Convert to fraction form
    126.74/189.35 = 110.57/x
  3. Step 3: Cross multiply
    126.74x = 189.35 × 110.57
  4. Step 4: Simplify right side
    126.74x = 20,934.93
  5. Step 5: Solve for x
    x = 20,934.93/126.74
  6. Step 6: Final answer
    x = 165.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.