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Finding the Fourth Proportional to 169,322.60, 254,091.90 and 80,676.20

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Solution

The fourth proportional to 169,322.60, 254,091.90 and 80,676.20 is: 121,065.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,322.60 : 254,091.90 = 80,676.20 : x
  2. Step 2: Convert to fraction form
    169,322.60/254,091.90 = 80,676.20/x
  3. Step 3: Cross multiply
    169,322.60x = 254,091.90 × 80,676.20
  4. Step 4: Simplify right side
    169,322.60x = 20,499,168,942.78
  5. Step 5: Solve for x
    x = 20,499,168,942.78/169,322.60
  6. Step 6: Final answer
    x = 121,065.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.