Home / 138,804-207,822

Finding the Third Proportional to 138,804 and 207,822

Calculator

Solution

The third proportional to 138,804 and 207,822 is: 311,158.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,804 : 207,822 = 207,822 : x
  2. Step 2: Convert to fraction form
    138,804/207,822 = 207,822/x
  3. Step 3: Cross multiply
    138,804x = 207,822 × 207,822
  4. Step 4: Simplify right side
    138,804x = 43,189,983,684
  5. Step 5: Solve for x
    x = 43,189,983,684/138,804
  6. Step 6: Final answer
    x = 311,158.06

Related Problems

Find third proportional to 69,402 and 103,911
Half scale
Find third proportional to 277,608 and 415,644
Double scale
Find third proportional to 138,806 and 207,825
Similar ratio
Find third proportional to 208,206 and 311,733
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.