Home / 80,104.85-120,157.25-30,196.13

Finding the Fourth Proportional to 80,104.85, 120,157.25 and 30,196.13

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Solution

The fourth proportional to 80,104.85, 120,157.25 and 30,196.13 is: 45,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,104.85 : 120,157.25 = 30,196.13 : x
  2. Step 2: Convert to fraction form
    80,104.85/120,157.25 = 30,196.13/x
  3. Step 3: Cross multiply
    80,104.85x = 120,157.25 × 30,196.13
  4. Step 4: Simplify right side
    80,104.85x = 3,628,283,189.68
  5. Step 5: Solve for x
    x = 3,628,283,189.68/80,104.85
  6. Step 6: Final answer
    x = 45,294.18

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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.