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Finding the Fourth Proportional to 163,393.43, 225,478.43 and 90,794.45

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Solution

The fourth proportional to 163,393.43, 225,478.43 and 90,794.45 is: 125,293.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,393.43 : 225,478.43 = 90,794.45 : x
  2. Step 2: Convert to fraction form
    163,393.43/225,478.43 = 90,794.45/x
  3. Step 3: Cross multiply
    163,393.43x = 225,478.43 × 90,794.45
  4. Step 4: Simplify right side
    163,393.43x = 20,472,188,627.59
  5. Step 5: Solve for x
    x = 20,472,188,627.59/163,393.43
  6. Step 6: Final answer
    x = 125,293.83

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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.