Home / 161-222.20-122.12

Finding the Fourth Proportional to 161, 222.20 and 122.12

Calculator

Solution

The fourth proportional to 161, 222.20 and 122.12 is: 168.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    161 : 222.20 = 122.12 : x
  2. Step 2: Convert to fraction form
    161/222.20 = 122.12/x
  3. Step 3: Cross multiply
    161x = 222.20 × 122.12
  4. Step 4: Simplify right side
    161x = 27,135.06
  5. Step 5: Solve for x
    x = 27,135.06/161
  6. Step 6: Final answer
    x = 168.54

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.