Home / 91,939-138,455

Finding the Third Proportional to 91,939 and 138,455

Calculator

Solution

The third proportional to 91,939 and 138,455 is: 208,505.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939 : 138,455 = 138,455 : x
  2. Step 2: Convert to fraction form
    91,939/138,455 = 138,455/x
  3. Step 3: Cross multiply
    91,939x = 138,455 × 138,455
  4. Step 4: Simplify right side
    91,939x = 19,169,787,025
  5. Step 5: Solve for x
    x = 19,169,787,025/91,939
  6. Step 6: Final answer
    x = 208,505.50

Related Problems

Find third proportional to 45,969.50 and 69,227.50
Half scale
Find third proportional to 183,878 and 276,910
Double scale
Find third proportional to 91,941 and 138,458
Similar ratio
Find third proportional to 137,908.50 and 207,682.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.