Home / 129,620-199,958

Finding the Third Proportional to 129,620 and 199,958

Calculator

Solution

The third proportional to 129,620 and 199,958 is: 308,464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,620 : 199,958 = 199,958 : x
  2. Step 2: Convert to fraction form
    129,620/199,958 = 199,958/x
  3. Step 3: Cross multiply
    129,620x = 199,958 × 199,958
  4. Step 4: Simplify right side
    129,620x = 39,983,201,764
  5. Step 5: Solve for x
    x = 39,983,201,764/129,620
  6. Step 6: Final answer
    x = 308,464.76

Related Problems

Find third proportional to 64,810 and 99,979
Half scale
Find third proportional to 259,240 and 399,916
Double scale
Find third proportional to 129,622 and 199,961
Similar ratio
Find third proportional to 194,430 and 299,937
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.