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Finding the Fourth Proportional to 126,791.58, 174,759.78 and 101,215.97

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Solution

The fourth proportional to 126,791.58, 174,759.78 and 101,215.97 is: 139,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,791.58 : 174,759.78 = 101,215.97 : x
  2. Step 2: Convert to fraction form
    126,791.58/174,759.78 = 101,215.97/x
  3. Step 3: Cross multiply
    126,791.58x = 174,759.78 × 101,215.97
  4. Step 4: Simplify right side
    126,791.58x = 17,688,479,775.89
  5. Step 5: Solve for x
    x = 17,688,479,775.89/126,791.58
  6. Step 6: Final answer
    x = 139,508.32

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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.