Home / 100,180.56-138,249.18-57,741.83

Finding the Fourth Proportional to 100,180.56, 138,249.18 and 57,741.83

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Solution

The fourth proportional to 100,180.56, 138,249.18 and 57,741.83 is: 79,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,180.56 : 138,249.18 = 57,741.83 : x
  2. Step 2: Convert to fraction form
    100,180.56/138,249.18 = 57,741.83/x
  3. Step 3: Cross multiply
    100,180.56x = 138,249.18 × 57,741.83
  4. Step 4: Simplify right side
    100,180.56x = 7,982,760,649.20
  5. Step 5: Solve for x
    x = 7,982,760,649.20/100,180.56
  6. Step 6: Final answer
    x = 79,683.73

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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.