Home / 85,406-135,712

Finding the Third Proportional to 85,406 and 135,712

Calculator

Solution

The third proportional to 85,406 and 135,712 is: 215,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,406 : 135,712 = 135,712 : x
  2. Step 2: Convert to fraction form
    85,406/135,712 = 135,712/x
  3. Step 3: Cross multiply
    85,406x = 135,712 × 135,712
  4. Step 4: Simplify right side
    85,406x = 18,417,746,944
  5. Step 5: Solve for x
    x = 18,417,746,944/85,406
  6. Step 6: Final answer
    x = 215,649.33

Related Problems

Find third proportional to 42,703 and 67,856
Half scale
Find third proportional to 170,812 and 271,424
Double scale
Find third proportional to 85,408 and 135,715
Similar ratio
Find third proportional to 128,109 and 203,568
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.