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Finding the Fourth Proportional to 192,279.92, 288,453.12 and 85,701.80

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Solution

The fourth proportional to 192,279.92, 288,453.12 and 85,701.80 is: 128,567.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,279.92 : 288,453.12 = 85,701.80 : x
  2. Step 2: Convert to fraction form
    192,279.92/288,453.12 = 85,701.80/x
  3. Step 3: Cross multiply
    192,279.92x = 288,453.12 × 85,701.80
  4. Step 4: Simplify right side
    192,279.92x = 24,720,951,599.62
  5. Step 5: Solve for x
    x = 24,720,951,599.62/192,279.92
  6. Step 6: Final answer
    x = 128,567.52

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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.