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Finding the Fourth Proportional to 126,846.78, 175,046.79 and 73,131.90

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Solution

The fourth proportional to 126,846.78, 175,046.79 and 73,131.90 is: 100,921.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,846.78 : 175,046.79 = 73,131.90 : x
  2. Step 2: Convert to fraction form
    126,846.78/175,046.79 = 73,131.90/x
  3. Step 3: Cross multiply
    126,846.78x = 175,046.79 × 73,131.90
  4. Step 4: Simplify right side
    126,846.78x = 12,801,504,341.60
  5. Step 5: Solve for x
    x = 12,801,504,341.60/126,846.78
  6. Step 6: Final answer
    x = 100,921.00

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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.