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Finding the Fourth Proportional to 192,606.80, 288,910.20 and 87,630.80

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Solution

The fourth proportional to 192,606.80, 288,910.20 and 87,630.80 is: 131,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,606.80 : 288,910.20 = 87,630.80 : x
  2. Step 2: Convert to fraction form
    192,606.80/288,910.20 = 87,630.80/x
  3. Step 3: Cross multiply
    192,606.80x = 288,910.20 × 87,630.80
  4. Step 4: Simplify right side
    192,606.80x = 25,317,431,954.16
  5. Step 5: Solve for x
    x = 25,317,431,954.16/192,606.80
  6. Step 6: Final answer
    x = 131,446.20

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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.