Home / 120,170.91-180,243.39-40,199.82

Finding the Fourth Proportional to 120,170.91, 180,243.39 and 40,199.82

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Solution

The fourth proportional to 120,170.91, 180,243.39 and 40,199.82 is: 60,295.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,170.91 : 180,243.39 = 40,199.82 : x
  2. Step 2: Convert to fraction form
    120,170.91/180,243.39 = 40,199.82/x
  3. Step 3: Cross multiply
    120,170.91x = 180,243.39 × 40,199.82
  4. Step 4: Simplify right side
    120,170.91x = 7,245,751,834.19
  5. Step 5: Solve for x
    x = 7,245,751,834.19/120,170.91
  6. Step 6: Final answer
    x = 60,295.39

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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.