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Finding the Fourth Proportional to 80,205.80, 120,179.10 and 50,570.60

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Solution

The fourth proportional to 80,205.80, 120,179.10 and 50,570.60 is: 75,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,205.80 : 120,179.10 = 50,570.60 : x
  2. Step 2: Convert to fraction form
    80,205.80/120,179.10 = 50,570.60/x
  3. Step 3: Cross multiply
    80,205.80x = 120,179.10 × 50,570.60
  4. Step 4: Simplify right side
    80,205.80x = 6,077,529,194.46
  5. Step 5: Solve for x
    x = 6,077,529,194.46/80,205.80
  6. Step 6: Final answer
    x = 75,774.19

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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.