Home / 135,245-207,431

Finding the Third Proportional to 135,245 and 207,431

Calculator

Solution

The third proportional to 135,245 and 207,431 is: 318,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,245 : 207,431 = 207,431 : x
  2. Step 2: Convert to fraction form
    135,245/207,431 = 207,431/x
  3. Step 3: Cross multiply
    135,245x = 207,431 × 207,431
  4. Step 4: Simplify right side
    135,245x = 43,027,619,761
  5. Step 5: Solve for x
    x = 43,027,619,761/135,245
  6. Step 6: Final answer
    x = 318,145.73

Related Problems

Find third proportional to 67,622.50 and 103,715.50
Half scale
Find third proportional to 270,490 and 414,862
Double scale
Find third proportional to 135,247 and 207,434
Similar ratio
Find third proportional to 202,867.50 and 311,146.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.