Home / 70,485-100,218

Finding the Third Proportional to 70,485 and 100,218

Calculator

Solution

The third proportional to 70,485 and 100,218 is: 142,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,485 : 100,218 = 100,218 : x
  2. Step 2: Convert to fraction form
    70,485/100,218 = 100,218/x
  3. Step 3: Cross multiply
    70,485x = 100,218 × 100,218
  4. Step 4: Simplify right side
    70,485x = 10,043,647,524
  5. Step 5: Solve for x
    x = 10,043,647,524/70,485
  6. Step 6: Final answer
    x = 142,493.40

Related Problems

Find third proportional to 35,242.50 and 50,109
Half scale
Find third proportional to 140,970 and 200,436
Double scale
Find third proportional to 70,487 and 100,221
Similar ratio
Find third proportional to 105,727.50 and 150,327
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.