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Finding the Fourth Proportional to 80,692.27, 120,804.54 and 72,144.55

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Solution

The fourth proportional to 80,692.27, 120,804.54 and 72,144.55 is: 108,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,692.27 : 120,804.54 = 72,144.55 : x
  2. Step 2: Convert to fraction form
    80,692.27/120,804.54 = 72,144.55/x
  3. Step 3: Cross multiply
    80,692.27x = 120,804.54 × 72,144.55
  4. Step 4: Simplify right side
    80,692.27x = 8,715,389,176.26
  5. Step 5: Solve for x
    x = 8,715,389,176.26/80,692.27
  6. Step 6: Final answer
    x = 108,007.73

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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.