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Finding the Fourth Proportional to 192,855.72, 289,329.45 and 80,473.49

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Solution

The fourth proportional to 192,855.72, 289,329.45 and 80,473.49 is: 120,729.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,855.72 : 289,329.45 = 80,473.49 : x
  2. Step 2: Convert to fraction form
    192,855.72/289,329.45 = 80,473.49/x
  3. Step 3: Cross multiply
    192,855.72x = 289,329.45 × 80,473.49
  4. Step 4: Simplify right side
    192,855.72x = 23,283,350,601.28
  5. Step 5: Solve for x
    x = 23,283,350,601.28/192,855.72
  6. Step 6: Final answer
    x = 120,729.38

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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.