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Finding the Fourth Proportional to 126,348.39, 174,361.11 and 68,987.79

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Solution

The fourth proportional to 126,348.39, 174,361.11 and 68,987.79 is: 95,203.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,348.39 : 174,361.11 = 68,987.79 : x
  2. Step 2: Convert to fraction form
    126,348.39/174,361.11 = 68,987.79/x
  3. Step 3: Cross multiply
    126,348.39x = 174,361.11 × 68,987.79
  4. Step 4: Simplify right side
    126,348.39x = 12,028,787,640.85
  5. Step 5: Solve for x
    x = 12,028,787,640.85/126,348.39
  6. Step 6: Final answer
    x = 95,203.33

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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.