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Finding the Fourth Proportional to 159,812.64, 220,542.73 and 87,216.10

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Solution

The fourth proportional to 159,812.64, 220,542.73 and 87,216.10 is: 120,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,812.64 : 220,542.73 = 87,216.10 : x
  2. Step 2: Convert to fraction form
    159,812.64/220,542.73 = 87,216.10/x
  3. Step 3: Cross multiply
    159,812.64x = 220,542.73 × 87,216.10
  4. Step 4: Simplify right side
    159,812.64x = 19,234,876,793.95
  5. Step 5: Solve for x
    x = 19,234,876,793.95/159,812.64
  6. Step 6: Final answer
    x = 120,358.92

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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.