Home / 100,394.44-138,546.17-55,074.74

Finding the Fourth Proportional to 100,394.44, 138,546.17 and 55,074.74

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Solution

The fourth proportional to 100,394.44, 138,546.17 and 55,074.74 is: 76,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,394.44 : 138,546.17 = 55,074.74 : x
  2. Step 2: Convert to fraction form
    100,394.44/138,546.17 = 55,074.74/x
  3. Step 3: Cross multiply
    100,394.44x = 138,546.17 × 55,074.74
  4. Step 4: Simplify right side
    100,394.44x = 7,630,393,735.70
  5. Step 5: Solve for x
    x = 7,630,393,735.70/100,394.44
  6. Step 6: Final answer
    x = 76,004.15

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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.