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Finding the Fourth Proportional to 136,249.78, 204,383.31 and 42,759.22

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Solution

The fourth proportional to 136,249.78, 204,383.31 and 42,759.22 is: 64,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,249.78 : 204,383.31 = 42,759.22 : x
  2. Step 2: Convert to fraction form
    136,249.78/204,383.31 = 42,759.22/x
  3. Step 3: Cross multiply
    136,249.78x = 204,383.31 × 42,759.22
  4. Step 4: Simplify right side
    136,249.78x = 8,739,270,916.62
  5. Step 5: Solve for x
    x = 8,739,270,916.62/136,249.78
  6. Step 6: Final answer
    x = 64,141.54

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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.