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Finding the Fourth Proportional to 126.26, 188.52 and 103.36

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Solution

The fourth proportional to 126.26, 188.52 and 103.36 is: 154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.26 : 188.52 = 103.36 : x
  2. Step 2: Convert to fraction form
    126.26/188.52 = 103.36/x
  3. Step 3: Cross multiply
    126.26x = 188.52 × 103.36
  4. Step 4: Simplify right side
    126.26x = 19,485.43
  5. Step 5: Solve for x
    x = 19,485.43/126.26
  6. Step 6: Final answer
    x = 154.33

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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.