Home / 128,981-195,419

Finding the Third Proportional to 128,981 and 195,419

Calculator

Solution

The third proportional to 128,981 and 195,419 is: 296,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,981 : 195,419 = 195,419 : x
  2. Step 2: Convert to fraction form
    128,981/195,419 = 195,419/x
  3. Step 3: Cross multiply
    128,981x = 195,419 × 195,419
  4. Step 4: Simplify right side
    128,981x = 38,188,585,561
  5. Step 5: Solve for x
    x = 38,188,585,561/128,981
  6. Step 6: Final answer
    x = 296,079.16

Related Problems

Find third proportional to 64,490.50 and 97,709.50
Half scale
Find third proportional to 257,962 and 390,838
Double scale
Find third proportional to 128,983 and 195,422
Similar ratio
Find third proportional to 193,471.50 and 293,128.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.