Home / 70,380-143,621

Finding the Third Proportional to 70,380 and 143,621

Calculator

Solution

The third proportional to 70,380 and 143,621 is: 293,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,380 : 143,621 = 143,621 : x
  2. Step 2: Convert to fraction form
    70,380/143,621 = 143,621/x
  3. Step 3: Cross multiply
    70,380x = 143,621 × 143,621
  4. Step 4: Simplify right side
    70,380x = 20,626,991,641
  5. Step 5: Solve for x
    x = 20,626,991,641/70,380
  6. Step 6: Final answer
    x = 293,080.30

Related Problems

Find third proportional to 35,190 and 71,810.50
Half scale
Find third proportional to 140,760 and 287,242
Double scale
Find third proportional to 70,382 and 143,625
Similar ratio
Find third proportional to 105,570 and 215,431.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.