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Finding the Fourth Proportional to 163,393.52, 225,478.56 and 90,794.54

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Solution

The fourth proportional to 163,393.52, 225,478.56 and 90,794.54 is: 125,293.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,393.52 : 225,478.56 = 90,794.54 : x
  2. Step 2: Convert to fraction form
    163,393.52/225,478.56 = 90,794.54/x
  3. Step 3: Cross multiply
    163,393.52x = 225,478.56 × 90,794.54
  4. Step 4: Simplify right side
    163,393.52x = 20,472,221,512.73
  5. Step 5: Solve for x
    x = 20,472,221,512.73/163,393.52
  6. Step 6: Final answer
    x = 125,293.96

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1.5x scale

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.