Home / 36.19-77.81

Finding the Third Proportional to 36.19 and 77.81

Calculator

Solution

The third proportional to 36.19 and 77.81 is: 167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.19 : 77.81 = 77.81 : x
  2. Step 2: Convert to fraction form
    36.19/77.81 = 77.81/x
  3. Step 3: Cross multiply
    36.19x = 77.81 × 77.81
  4. Step 4: Simplify right side
    36.19x = 6,054.79
  5. Step 5: Solve for x
    x = 6,054.79/36.19
  6. Step 6: Final answer
    x = 167.32

Related Problems

Find third proportional to 18.09 and 38.91
Half scale
Find third proportional to 72.38 and 155.63
Double scale
Find third proportional to 38 and 82
Similar ratio
Find third proportional to 54.28 and 116.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.