Home / 68,302-139,976

Finding the Third Proportional to 68,302 and 139,976

Calculator

Solution

The third proportional to 68,302 and 139,976 is: 286,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,302 : 139,976 = 139,976 : x
  2. Step 2: Convert to fraction form
    68,302/139,976 = 139,976/x
  3. Step 3: Cross multiply
    68,302x = 139,976 × 139,976
  4. Step 4: Simplify right side
    68,302x = 19,593,280,576
  5. Step 5: Solve for x
    x = 19,593,280,576/68,302
  6. Step 6: Final answer
    x = 286,862.47

Related Problems

Find third proportional to 34,151 and 69,988
Half scale
Find third proportional to 136,604 and 279,952
Double scale
Find third proportional to 68,304 and 139,980
Similar ratio
Find third proportional to 102,453 and 209,964
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.