Home / 142.50-161

Finding the Third Proportional to 142.50 and 161

Calculator

Solution

The third proportional to 142.50 and 161 is: 181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.50 : 161 = 161 : x
  2. Step 2: Convert to fraction form
    142.50/161 = 161/x
  3. Step 3: Cross multiply
    142.50x = 161 × 161
  4. Step 4: Simplify right side
    142.50x = 25,921
  5. Step 5: Solve for x
    x = 25,921/142.50
  6. Step 6: Final answer
    x = 181.90

Related Problems

Find third proportional to 71.25 and 80.50
Half scale
Find third proportional to 285 and 322
Double scale
Find third proportional to 145 and 163
Similar ratio
Find third proportional to 213.75 and 241.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.