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Finding the Fourth Proportional to 126,034.73, 173,811.02 and 91,989.28

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Solution

The fourth proportional to 126,034.73, 173,811.02 and 91,989.28 is: 126,859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,034.73 : 173,811.02 = 91,989.28 : x
  2. Step 2: Convert to fraction form
    126,034.73/173,811.02 = 91,989.28/x
  3. Step 3: Cross multiply
    126,034.73x = 173,811.02 × 91,989.28
  4. Step 4: Simplify right side
    126,034.73x = 15,988,750,585.87
  5. Step 5: Solve for x
    x = 15,988,750,585.87/126,034.73
  6. Step 6: Final answer
    x = 126,859.88

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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.