Home / 136.50-180.75

Finding the Third Proportional to 136.50 and 180.75

Calculator

Solution

The third proportional to 136.50 and 180.75 is: 239.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.50 : 180.75 = 180.75 : x
  2. Step 2: Convert to fraction form
    136.50/180.75 = 180.75/x
  3. Step 3: Cross multiply
    136.50x = 180.75 × 180.75
  4. Step 4: Simplify right side
    136.50x = 32,670.56
  5. Step 5: Solve for x
    x = 32,670.56/136.50
  6. Step 6: Final answer
    x = 239.34

Related Problems

Find third proportional to 68.25 and 90.38
Half scale
Find third proportional to 273 and 361.50
Double scale
Find third proportional to 139 and 183
Similar ratio
Find third proportional to 204.75 and 271.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.