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Finding the Fourth Proportional to 159,608.38, 220,262.01 and 87,011.32

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Solution

The fourth proportional to 159,608.38, 220,262.01 and 87,011.32 is: 120,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,608.38 : 220,262.01 = 87,011.32 : x
  2. Step 2: Convert to fraction form
    159,608.38/220,262.01 = 87,011.32/x
  3. Step 3: Cross multiply
    159,608.38x = 220,262.01 × 87,011.32
  4. Step 4: Simplify right side
    159,608.38x = 19,165,288,786.61
  5. Step 5: Solve for x
    x = 19,165,288,786.61/159,608.38
  6. Step 6: Final answer
    x = 120,076.96

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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.