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Finding the Fourth Proportional to 134,383.67, 185,469.87 and 80,698.28

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Solution

The fourth proportional to 134,383.67, 185,469.87 and 80,698.28 is: 111,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,383.67 : 185,469.87 = 80,698.28 : x
  2. Step 2: Convert to fraction form
    134,383.67/185,469.87 = 80,698.28/x
  3. Step 3: Cross multiply
    134,383.67x = 185,469.87 × 80,698.28
  4. Step 4: Simplify right side
    134,383.67x = 14,967,099,097.33
  5. Step 5: Solve for x
    x = 14,967,099,097.33/134,383.67
  6. Step 6: Final answer
    x = 111,375.88

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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.