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Finding the Fourth Proportional to 163,542.69, 225,695.31 and 91,922.49

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Solution

The fourth proportional to 163,542.69, 225,695.31 and 91,922.49 is: 126,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,542.69 : 225,695.31 = 91,922.49 : x
  2. Step 2: Convert to fraction form
    163,542.69/225,695.31 = 91,922.49/x
  3. Step 3: Cross multiply
    163,542.69x = 225,695.31 × 91,922.49
  4. Step 4: Simplify right side
    163,542.69x = 20,746,474,876.52
  5. Step 5: Solve for x
    x = 20,746,474,876.52/163,542.69
  6. Step 6: Final answer
    x = 126,856.63

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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.