Home / 100,327.56-138,452.04-54,387.36

Finding the Fourth Proportional to 100,327.56, 138,452.04 and 54,387.36

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Solution

The fourth proportional to 100,327.56, 138,452.04 and 54,387.36 is: 75,054.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,327.56 : 138,452.04 = 54,387.36 : x
  2. Step 2: Convert to fraction form
    100,327.56/138,452.04 = 54,387.36/x
  3. Step 3: Cross multiply
    100,327.56x = 138,452.04 × 54,387.36
  4. Step 4: Simplify right side
    100,327.56x = 7,530,040,942.21
  5. Step 5: Solve for x
    x = 7,530,040,942.21/100,327.56
  6. Step 6: Final answer
    x = 75,054.56

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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.