Home / 100,212.44-138,293.22-54,891.18

Finding the Fourth Proportional to 100,212.44, 138,293.22 and 54,891.18

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Solution

The fourth proportional to 100,212.44, 138,293.22 and 54,891.18 is: 75,749.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,212.44 : 138,293.22 = 54,891.18 : x
  2. Step 2: Convert to fraction form
    100,212.44/138,293.22 = 54,891.18/x
  3. Step 3: Cross multiply
    100,212.44x = 138,293.22 × 54,891.18
  4. Step 4: Simplify right side
    100,212.44x = 7,591,078,237.64
  5. Step 5: Solve for x
    x = 7,591,078,237.64/100,212.44
  6. Step 6: Final answer
    x = 75,749.86

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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.