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Finding the Fourth Proportional to 192,692.20, 288,843.90 and 87,586.60

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Solution

The fourth proportional to 192,692.20, 288,843.90 and 87,586.60 is: 131,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,692.20 : 288,843.90 = 87,586.60 : x
  2. Step 2: Convert to fraction form
    192,692.20/288,843.90 = 87,586.60/x
  3. Step 3: Cross multiply
    192,692.20x = 288,843.90 × 87,586.60
  4. Step 4: Simplify right side
    192,692.20x = 25,298,855,131.74
  5. Step 5: Solve for x
    x = 25,298,855,131.74/192,692.20
  6. Step 6: Final answer
    x = 131,291.54

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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.