Home / 90,879-139,497

Finding the Third Proportional to 90,879 and 139,497

Calculator

Solution

The third proportional to 90,879 and 139,497 is: 214,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,879 : 139,497 = 139,497 : x
  2. Step 2: Convert to fraction form
    90,879/139,497 = 139,497/x
  3. Step 3: Cross multiply
    90,879x = 139,497 × 139,497
  4. Step 4: Simplify right side
    90,879x = 19,459,413,009
  5. Step 5: Solve for x
    x = 19,459,413,009/90,879
  6. Step 6: Final answer
    x = 214,124.42

Related Problems

Find third proportional to 45,439.50 and 69,748.50
Half scale
Find third proportional to 181,758 and 278,994
Double scale
Find third proportional to 90,881 and 139,500
Similar ratio
Find third proportional to 136,318.50 and 209,245.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.