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Finding the Fourth Proportional to 100,179.54, 138,245.30 and 54,859.44

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Solution

The fourth proportional to 100,179.54, 138,245.30 and 54,859.44 is: 75,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,179.54 : 138,245.30 = 54,859.44 : x
  2. Step 2: Convert to fraction form
    100,179.54/138,245.30 = 54,859.44/x
  3. Step 3: Cross multiply
    100,179.54x = 138,245.30 × 54,859.44
  4. Step 4: Simplify right side
    100,179.54x = 7,584,059,466.33
  5. Step 5: Solve for x
    x = 7,584,059,466.33/100,179.54
  6. Step 6: Final answer
    x = 75,704.67

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1.5x scale

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.