Home / 139,144-211,371

Finding the Third Proportional to 139,144 and 211,371

Calculator

Solution

The third proportional to 139,144 and 211,371 is: 321,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,144 : 211,371 = 211,371 : x
  2. Step 2: Convert to fraction form
    139,144/211,371 = 211,371/x
  3. Step 3: Cross multiply
    139,144x = 211,371 × 211,371
  4. Step 4: Simplify right side
    139,144x = 44,677,699,641
  5. Step 5: Solve for x
    x = 44,677,699,641/139,144
  6. Step 6: Final answer
    x = 321,089.66

Related Problems

Find third proportional to 69,572 and 105,685.50
Half scale
Find third proportional to 278,288 and 422,742
Double scale
Find third proportional to 139,146 and 211,374
Similar ratio
Find third proportional to 208,716 and 317,056.50
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.