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Finding the Fourth Proportional to 126.28, 188.37 and 114.12

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Solution

The fourth proportional to 126.28, 188.37 and 114.12 is: 170.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.28 : 188.37 = 114.12 : x
  2. Step 2: Convert to fraction form
    126.28/188.37 = 114.12/x
  3. Step 3: Cross multiply
    126.28x = 188.37 × 114.12
  4. Step 4: Simplify right side
    126.28x = 21,496.78
  5. Step 5: Solve for x
    x = 21,496.78/126.28
  6. Step 6: Final answer
    x = 170.23

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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.