Home / 137,587-212,655

Finding the Third Proportional to 137,587 and 212,655

Calculator

Solution

The third proportional to 137,587 and 212,655 is: 328,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,587 : 212,655 = 212,655 : x
  2. Step 2: Convert to fraction form
    137,587/212,655 = 212,655/x
  3. Step 3: Cross multiply
    137,587x = 212,655 × 212,655
  4. Step 4: Simplify right side
    137,587x = 45,222,149,025
  5. Step 5: Solve for x
    x = 45,222,149,025/137,587
  6. Step 6: Final answer
    x = 328,680.39

Related Problems

Find third proportional to 68,793.50 and 106,327.50
Half scale
Find third proportional to 275,174 and 425,310
Double scale
Find third proportional to 137,589 and 212,658
Similar ratio
Find third proportional to 206,380.50 and 318,982.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.