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Finding the Fourth Proportional to 159,819.66, 220,558.32 and 91,858.68

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Solution

The fourth proportional to 159,819.66, 220,558.32 and 91,858.68 is: 126,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,819.66 : 220,558.32 = 91,858.68 : x
  2. Step 2: Convert to fraction form
    159,819.66/220,558.32 = 91,858.68/x
  3. Step 3: Cross multiply
    159,819.66x = 220,558.32 × 91,858.68
  4. Step 4: Simplify right side
    159,819.66x = 20,260,196,138.22
  5. Step 5: Solve for x
    x = 20,260,196,138.22/159,819.66
  6. Step 6: Final answer
    x = 126,769.11

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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.