Home / 100,990-212,132

Finding the Third Proportional to 100,990 and 212,132

Calculator

Solution

The third proportional to 100,990 and 212,132 is: 445,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,990 : 212,132 = 212,132 : x
  2. Step 2: Convert to fraction form
    100,990/212,132 = 212,132/x
  3. Step 3: Cross multiply
    100,990x = 212,132 × 212,132
  4. Step 4: Simplify right side
    100,990x = 44,999,985,424
  5. Step 5: Solve for x
    x = 44,999,985,424/100,990
  6. Step 6: Final answer
    x = 445,588.53

Related Problems

Find third proportional to 50,495 and 106,066
Half scale
Find third proportional to 201,980 and 424,264
Double scale
Find third proportional to 100,992 and 212,136
Similar ratio
Find third proportional to 151,485 and 318,198
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.