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Finding the Fourth Proportional to 126.94, 188.84 and 125.59

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Solution

The fourth proportional to 126.94, 188.84 and 125.59 is: 186.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.94 : 188.84 = 125.59 : x
  2. Step 2: Convert to fraction form
    126.94/188.84 = 125.59/x
  3. Step 3: Cross multiply
    126.94x = 188.84 × 125.59
  4. Step 4: Simplify right side
    126.94x = 23,716.42
  5. Step 5: Solve for x
    x = 23,716.42/126.94
  6. Step 6: Final answer
    x = 186.83

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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.