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Finding the Fourth Proportional to 163,520.52, 225,676.96 and 90,930.60

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Solution

The fourth proportional to 163,520.52, 225,676.96 and 90,930.60 is: 125,494.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,520.52 : 225,676.96 = 90,930.60 : x
  2. Step 2: Convert to fraction form
    163,520.52/225,676.96 = 90,930.60/x
  3. Step 3: Cross multiply
    163,520.52x = 225,676.96 × 90,930.60
  4. Step 4: Simplify right side
    163,520.52x = 20,520,941,378.98
  5. Step 5: Solve for x
    x = 20,520,941,378.98/163,520.52
  6. Step 6: Final answer
    x = 125,494.59

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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.