Home / 80,217.03-120,290.01-42,770.13

Finding the Fourth Proportional to 80,217.03, 120,290.01 and 42,770.13

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Solution

The fourth proportional to 80,217.03, 120,290.01 and 42,770.13 is: 64,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,217.03 : 120,290.01 = 42,770.13 : x
  2. Step 2: Convert to fraction form
    80,217.03/120,290.01 = 42,770.13/x
  3. Step 3: Cross multiply
    80,217.03x = 120,290.01 × 42,770.13
  4. Step 4: Simplify right side
    80,217.03x = 5,144,819,365.40
  5. Step 5: Solve for x
    x = 5,144,819,365.40/80,217.03
  6. Step 6: Final answer
    x = 64,136.25

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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.