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Finding the Fourth Proportional to 192,012.80, 287,932.80 and 73,644.80

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Solution

The fourth proportional to 192,012.80, 287,932.80 and 73,644.80 is: 110,434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,012.80 : 287,932.80 = 73,644.80 : x
  2. Step 2: Convert to fraction form
    192,012.80/287,932.80 = 73,644.80/x
  3. Step 3: Cross multiply
    192,012.80x = 287,932.80 × 73,644.80
  4. Step 4: Simplify right side
    192,012.80x = 21,204,753,469.44
  5. Step 5: Solve for x
    x = 21,204,753,469.44/192,012.80
  6. Step 6: Final answer
    x = 110,434.06

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1.5x scale

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.