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Finding the Fourth Proportional to 192,368.66, 288,629.73 and 80,126.28

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Solution

The fourth proportional to 192,368.66, 288,629.73 and 80,126.28 is: 120,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,368.66 : 288,629.73 = 80,126.28 : x
  2. Step 2: Convert to fraction form
    192,368.66/288,629.73 = 80,126.28/x
  3. Step 3: Cross multiply
    192,368.66x = 288,629.73 × 80,126.28
  4. Step 4: Simplify right side
    192,368.66x = 23,126,826,562.30
  5. Step 5: Solve for x
    x = 23,126,826,562.30/192,368.66
  6. Step 6: Final answer
    x = 120,221.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.