Home / 66,420-143,694

Finding the Third Proportional to 66,420 and 143,694

Calculator

Solution

The third proportional to 66,420 and 143,694 is: 310,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420 : 143,694 = 143,694 : x
  2. Step 2: Convert to fraction form
    66,420/143,694 = 143,694/x
  3. Step 3: Cross multiply
    66,420x = 143,694 × 143,694
  4. Step 4: Simplify right side
    66,420x = 20,647,965,636
  5. Step 5: Solve for x
    x = 20,647,965,636/66,420
  6. Step 6: Final answer
    x = 310,869.70

Related Problems

Find third proportional to 33,210 and 71,847
Half scale
Find third proportional to 132,840 and 287,388
Double scale
Find third proportional to 66,422 and 143,698
Similar ratio
Find third proportional to 99,630 and 215,541
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.