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Finding the Fourth Proportional to 192,156.69, 288,079.27 and 79,920.90

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Solution

The fourth proportional to 192,156.69, 288,079.27 and 79,920.90 is: 119,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,156.69 : 288,079.27 = 79,920.90 : x
  2. Step 2: Convert to fraction form
    192,156.69/288,079.27 = 79,920.90/x
  3. Step 3: Cross multiply
    192,156.69x = 288,079.27 × 79,920.90
  4. Step 4: Simplify right side
    192,156.69x = 23,023,554,329.94
  5. Step 5: Solve for x
    x = 23,023,554,329.94/192,156.69
  6. Step 6: Final answer
    x = 119,816.56

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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.