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Finding the Fourth Proportional to 159,793.55, 220,516.13 and 87,201.55

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Solution

The fourth proportional to 159,793.55, 220,516.13 and 87,201.55 is: 120,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,793.55 : 220,516.13 = 87,201.55 : x
  2. Step 2: Convert to fraction form
    159,793.55/220,516.13 = 87,201.55/x
  3. Step 3: Cross multiply
    159,793.55x = 220,516.13 × 87,201.55
  4. Step 4: Simplify right side
    159,793.55x = 19,229,348,336.00
  5. Step 5: Solve for x
    x = 19,229,348,336.00/159,793.55
  6. Step 6: Final answer
    x = 120,338.70

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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.