Home / 68,977-128,108

Finding the Third Proportional to 68,977 and 128,108

Calculator

Solution

The third proportional to 68,977 and 128,108 is: 237,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,977 : 128,108 = 128,108 : x
  2. Step 2: Convert to fraction form
    68,977/128,108 = 128,108/x
  3. Step 3: Cross multiply
    68,977x = 128,108 × 128,108
  4. Step 4: Simplify right side
    68,977x = 16,411,659,664
  5. Step 5: Solve for x
    x = 16,411,659,664/68,977
  6. Step 6: Final answer
    x = 237,929.45

Related Problems

Find third proportional to 34,488.50 and 64,054
Half scale
Find third proportional to 137,954 and 256,216
Double scale
Find third proportional to 68,979 and 128,112
Similar ratio
Find third proportional to 103,465.50 and 192,162
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.