Home / 100,213.20-138,305.88-57,773.25

Finding the Fourth Proportional to 100,213.20, 138,305.88 and 57,773.25

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Solution

The fourth proportional to 100,213.20, 138,305.88 and 57,773.25 is: 79,733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,213.20 : 138,305.88 = 57,773.25 : x
  2. Step 2: Convert to fraction form
    100,213.20/138,305.88 = 57,773.25/x
  3. Step 3: Cross multiply
    100,213.20x = 138,305.88 × 57,773.25
  4. Step 4: Simplify right side
    100,213.20x = 7,990,380,181.71
  5. Step 5: Solve for x
    x = 7,990,380,181.71/100,213.20
  6. Step 6: Final answer
    x = 79,733.81

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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.