Home / 66,602-139,324

Finding the Third Proportional to 66,602 and 139,324

Calculator

Solution

The third proportional to 66,602 and 139,324 is: 291,450.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602 : 139,324 = 139,324 : x
  2. Step 2: Convert to fraction form
    66,602/139,324 = 139,324/x
  3. Step 3: Cross multiply
    66,602x = 139,324 × 139,324
  4. Step 4: Simplify right side
    66,602x = 19,411,176,976
  5. Step 5: Solve for x
    x = 19,411,176,976/66,602
  6. Step 6: Final answer
    x = 291,450.36

Related Problems

Find third proportional to 33,301 and 69,662
Half scale
Find third proportional to 133,204 and 278,648
Double scale
Find third proportional to 66,604 and 139,328
Similar ratio
Find third proportional to 99,903 and 208,986
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.