Home / 138,758-153,338

Finding the Third Proportional to 138,758 and 153,338

Calculator

Solution

The third proportional to 138,758 and 153,338 is: 169,449.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,758 : 153,338 = 153,338 : x
  2. Step 2: Convert to fraction form
    138,758/153,338 = 153,338/x
  3. Step 3: Cross multiply
    138,758x = 153,338 × 153,338
  4. Step 4: Simplify right side
    138,758x = 23,512,542,244
  5. Step 5: Solve for x
    x = 23,512,542,244/138,758
  6. Step 6: Final answer
    x = 169,449.99

Related Problems

Find third proportional to 69,379 and 76,669
Half scale
Find third proportional to 277,516 and 306,676
Double scale
Find third proportional to 138,760 and 153,340
Similar ratio
Find third proportional to 208,137 and 230,007
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.