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Finding the Fourth Proportional to 169,435.20, 254,028.24 and 80,751

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Solution

The fourth proportional to 169,435.20, 254,028.24 and 80,751 is: 121,067.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,435.20 : 254,028.24 = 80,751 : x
  2. Step 2: Convert to fraction form
    169,435.20/254,028.24 = 80,751/x
  3. Step 3: Cross multiply
    169,435.20x = 254,028.24 × 80,751
  4. Step 4: Simplify right side
    169,435.20x = 20,513,034,408.24
  5. Step 5: Solve for x
    x = 20,513,034,408.24/169,435.20
  6. Step 6: Final answer
    x = 121,067.14

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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.