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Finding the Fourth Proportional to 159,249.65, 219,765.56 and 87,627.83

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Solution

The fourth proportional to 159,249.65, 219,765.56 and 87,627.83 is: 120,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,249.65 : 219,765.56 = 87,627.83 : x
  2. Step 2: Convert to fraction form
    159,249.65/219,765.56 = 87,627.83/x
  3. Step 3: Cross multiply
    159,249.65x = 219,765.56 × 87,627.83
  4. Step 4: Simplify right side
    159,249.65x = 19,257,577,594.57
  5. Step 5: Solve for x
    x = 19,257,577,594.57/159,249.65
  6. Step 6: Final answer
    x = 120,926.97

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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.