Home / 84,918-108,909

Finding the Third Proportional to 84,918 and 108,909

Calculator

Solution

The third proportional to 84,918 and 108,909 is: 139,677.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,918 : 108,909 = 108,909 : x
  2. Step 2: Convert to fraction form
    84,918/108,909 = 108,909/x
  3. Step 3: Cross multiply
    84,918x = 108,909 × 108,909
  4. Step 4: Simplify right side
    84,918x = 11,861,170,281
  5. Step 5: Solve for x
    x = 11,861,170,281/84,918
  6. Step 6: Final answer
    x = 139,677.93

Related Problems

Find third proportional to 42,459 and 54,454.50
Half scale
Find third proportional to 169,836 and 217,818
Double scale
Find third proportional to 84,920 and 108,912
Similar ratio
Find third proportional to 127,377 and 163,363.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.