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Finding the Fourth Proportional to 80,118.98, 120,206.21 and 30,213.39

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Solution

The fourth proportional to 80,118.98, 120,206.21 and 30,213.39 is: 45,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,118.98 : 120,206.21 = 30,213.39 : x
  2. Step 2: Convert to fraction form
    80,118.98/120,206.21 = 30,213.39/x
  3. Step 3: Cross multiply
    80,118.98x = 120,206.21 × 30,213.39
  4. Step 4: Simplify right side
    80,118.98x = 3,631,837,103.15
  5. Step 5: Solve for x
    x = 3,631,837,103.15/80,118.98
  6. Step 6: Final answer
    x = 45,330.55

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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.