Home / 139,986-215,163

Finding the Third Proportional to 139,986 and 215,163

Calculator

Solution

The third proportional to 139,986 and 215,163 is: 330,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,986 : 215,163 = 215,163 : x
  2. Step 2: Convert to fraction form
    139,986/215,163 = 215,163/x
  3. Step 3: Cross multiply
    139,986x = 215,163 × 215,163
  4. Step 4: Simplify right side
    139,986x = 46,295,116,569
  5. Step 5: Solve for x
    x = 46,295,116,569/139,986
  6. Step 6: Final answer
    x = 330,712.48

Related Problems

Find third proportional to 69,993 and 107,581.50
Half scale
Find third proportional to 279,972 and 430,326
Double scale
Find third proportional to 139,988 and 215,166
Similar ratio
Find third proportional to 209,979 and 322,744.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.