Home / 120,861-260,939

Finding the Third Proportional to 120,861 and 260,939

Calculator

Solution

The third proportional to 120,861 and 260,939 is: 563,367.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,861 : 260,939 = 260,939 : x
  2. Step 2: Convert to fraction form
    120,861/260,939 = 260,939/x
  3. Step 3: Cross multiply
    120,861x = 260,939 × 260,939
  4. Step 4: Simplify right side
    120,861x = 68,089,161,721
  5. Step 5: Solve for x
    x = 68,089,161,721/120,861
  6. Step 6: Final answer
    x = 563,367.52

Related Problems

Find third proportional to 60,430.50 and 130,469.50
Half scale
Find third proportional to 241,722 and 521,878
Double scale
Find third proportional to 120,863 and 260,943
Similar ratio
Find third proportional to 181,291.50 and 391,408.50
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.