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Finding the Fourth Proportional to 159,761.70, 220,471.85 and 88,143.82

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Solution

The fourth proportional to 159,761.70, 220,471.85 and 88,143.82 is: 121,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,761.70 : 220,471.85 = 88,143.82 : x
  2. Step 2: Convert to fraction form
    159,761.70/220,471.85 = 88,143.82/x
  3. Step 3: Cross multiply
    159,761.70x = 220,471.85 × 88,143.82
  4. Step 4: Simplify right side
    159,761.70x = 19,433,230,730.65
  5. Step 5: Solve for x
    x = 19,433,230,730.65/159,761.70
  6. Step 6: Final answer
    x = 121,638.86

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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.