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Finding the Fourth Proportional to 159,856.56, 220,590.09 and 91,873.62

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Solution

The fourth proportional to 159,856.56, 220,590.09 and 91,873.62 is: 126,778.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,856.56 : 220,590.09 = 91,873.62 : x
  2. Step 2: Convert to fraction form
    159,856.56/220,590.09 = 91,873.62/x
  3. Step 3: Cross multiply
    159,856.56x = 220,590.09 × 91,873.62
  4. Step 4: Simplify right side
    159,856.56x = 20,266,410,104.43
  5. Step 5: Solve for x
    x = 20,266,410,104.43/159,856.56
  6. Step 6: Final answer
    x = 126,778.72

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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.