Home / 89,740-138,937

Finding the Third Proportional to 89,740 and 138,937

Calculator

Solution

The third proportional to 89,740 and 138,937 is: 215,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,740 : 138,937 = 138,937 : x
  2. Step 2: Convert to fraction form
    89,740/138,937 = 138,937/x
  3. Step 3: Cross multiply
    89,740x = 138,937 × 138,937
  4. Step 4: Simplify right side
    89,740x = 19,303,489,969
  5. Step 5: Solve for x
    x = 19,303,489,969/89,740
  6. Step 6: Final answer
    x = 215,104.64

Related Problems

Find third proportional to 44,870 and 69,468.50
Half scale
Find third proportional to 179,480 and 277,874
Double scale
Find third proportional to 89,742 and 138,940
Similar ratio
Find third proportional to 134,610 and 208,405.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.