Home / 80,199.45-120,316.10-30,278.44

Finding the Fourth Proportional to 80,199.45, 120,316.10 and 30,278.44

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Solution

The fourth proportional to 80,199.45, 120,316.10 and 30,278.44 is: 45,424.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,199.45 : 120,316.10 = 30,278.44 : x
  2. Step 2: Convert to fraction form
    80,199.45/120,316.10 = 30,278.44/x
  3. Step 3: Cross multiply
    80,199.45x = 120,316.10 × 30,278.44
  4. Step 4: Simplify right side
    80,199.45x = 3,642,983,814.88
  5. Step 5: Solve for x
    x = 3,642,983,814.88/80,199.45
  6. Step 6: Final answer
    x = 45,424.05

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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.