Home / 74.75-109.75

Finding the Third Proportional to 74.75 and 109.75

Calculator

Solution

The third proportional to 74.75 and 109.75 is: 161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.75 : 109.75 = 109.75 : x
  2. Step 2: Convert to fraction form
    74.75/109.75 = 109.75/x
  3. Step 3: Cross multiply
    74.75x = 109.75 × 109.75
  4. Step 4: Simplify right side
    74.75x = 12,045.06
  5. Step 5: Solve for x
    x = 12,045.06/74.75
  6. Step 6: Final answer
    x = 161.14

Related Problems

Find third proportional to 37.38 and 54.88
Half scale
Find third proportional to 149.50 and 219.50
Double scale
Find third proportional to 77 and 113
Similar ratio
Find third proportional to 112.13 and 164.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.