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Finding the Fourth Proportional to 137,969.52, 190,470.48 and 92,884.56

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Solution

The fourth proportional to 137,969.52, 190,470.48 and 92,884.56 is: 128,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,969.52 : 190,470.48 = 92,884.56 : x
  2. Step 2: Convert to fraction form
    137,969.52/190,470.48 = 92,884.56/x
  3. Step 3: Cross multiply
    137,969.52x = 190,470.48 × 92,884.56
  4. Step 4: Simplify right side
    137,969.52x = 17,691,766,727.79
  5. Step 5: Solve for x
    x = 17,691,766,727.79/137,969.52
  6. Step 6: Final answer
    x = 128,229.53

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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.