Home / 100,624.44-138,861.36-55,305.48

Finding the Fourth Proportional to 100,624.44, 138,861.36 and 55,305.48

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Solution

The fourth proportional to 100,624.44, 138,861.36 and 55,305.48 is: 76,321.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,624.44 : 138,861.36 = 55,305.48 : x
  2. Step 2: Convert to fraction form
    100,624.44/138,861.36 = 55,305.48/x
  3. Step 3: Cross multiply
    100,624.44x = 138,861.36 × 55,305.48
  4. Step 4: Simplify right side
    100,624.44x = 7,679,794,168.25
  5. Step 5: Solve for x
    x = 7,679,794,168.25/100,624.44
  6. Step 6: Final answer
    x = 76,321.36

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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.