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Finding the Fourth Proportional to 126.49, 188.77 and 124.96

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Solution

The fourth proportional to 126.49, 188.77 and 124.96 is: 186.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.49 : 188.77 = 124.96 : x
  2. Step 2: Convert to fraction form
    126.49/188.77 = 124.96/x
  3. Step 3: Cross multiply
    126.49x = 188.77 × 124.96
  4. Step 4: Simplify right side
    126.49x = 23,588.70
  5. Step 5: Solve for x
    x = 23,588.70/126.49
  6. Step 6: Final answer
    x = 186.49

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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.