Home / 129,105-278,604

Finding the Third Proportional to 129,105 and 278,604

Calculator

Solution

The third proportional to 129,105 and 278,604 is: 601,217.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,105 : 278,604 = 278,604 : x
  2. Step 2: Convert to fraction form
    129,105/278,604 = 278,604/x
  3. Step 3: Cross multiply
    129,105x = 278,604 × 278,604
  4. Step 4: Simplify right side
    129,105x = 77,620,188,816
  5. Step 5: Solve for x
    x = 77,620,188,816/129,105
  6. Step 6: Final answer
    x = 601,217.53

Related Problems

Find third proportional to 64,552.50 and 139,302
Half scale
Find third proportional to 258,210 and 557,208
Double scale
Find third proportional to 129,107 and 278,608
Similar ratio
Find third proportional to 193,657.50 and 417,906
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.