Home / 99,900-212,512

Finding the Third Proportional to 99,900 and 212,512

Calculator

Solution

The third proportional to 99,900 and 212,512 is: 452,065.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,900 : 212,512 = 212,512 : x
  2. Step 2: Convert to fraction form
    99,900/212,512 = 212,512/x
  3. Step 3: Cross multiply
    99,900x = 212,512 × 212,512
  4. Step 4: Simplify right side
    99,900x = 45,161,350,144
  5. Step 5: Solve for x
    x = 45,161,350,144/99,900
  6. Step 6: Final answer
    x = 452,065.57

Related Problems

Find third proportional to 49,950 and 106,256
Half scale
Find third proportional to 199,800 and 425,024
Double scale
Find third proportional to 99,902 and 212,516
Similar ratio
Find third proportional to 149,850 and 318,768
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.