Home / 34.50-81

Finding the Third Proportional to 34.50 and 81

Calculator

Solution

The third proportional to 34.50 and 81 is: 190.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.50 : 81 = 81 : x
  2. Step 2: Convert to fraction form
    34.50/81 = 81/x
  3. Step 3: Cross multiply
    34.50x = 81 × 81
  4. Step 4: Simplify right side
    34.50x = 6,561
  5. Step 5: Solve for x
    x = 6,561/34.50
  6. Step 6: Final answer
    x = 190.17

Related Problems

Find third proportional to 17.25 and 40.50
Half scale
Find third proportional to 69 and 162
Double scale
Find third proportional to 37 and 86
Similar ratio
Find third proportional to 51.75 and 121.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.