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Finding the Fourth Proportional to 126,911.78, 175,091.90 and 75,925.97

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Solution

The fourth proportional to 126,911.78, 175,091.90 and 75,925.97 is: 104,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,911.78 : 175,091.90 = 75,925.97 : x
  2. Step 2: Convert to fraction form
    126,911.78/175,091.90 = 75,925.97/x
  3. Step 3: Cross multiply
    126,911.78x = 175,091.90 × 75,925.97
  4. Step 4: Simplify right side
    126,911.78x = 13,294,022,346.64
  5. Step 5: Solve for x
    x = 13,294,022,346.64/126,911.78
  6. Step 6: Final answer
    x = 104,750.11

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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.