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Finding the Fourth Proportional to 126.94, 175.26 and 80.34

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Solution

The fourth proportional to 126.94, 175.26 and 80.34 is: 110.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.94 : 175.26 = 80.34 : x
  2. Step 2: Convert to fraction form
    126.94/175.26 = 80.34/x
  3. Step 3: Cross multiply
    126.94x = 175.26 × 80.34
  4. Step 4: Simplify right side
    126.94x = 14,080.39
  5. Step 5: Solve for x
    x = 14,080.39/126.94
  6. Step 6: Final answer
    x = 110.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.