Home / 129,023-199,288

Finding the Third Proportional to 129,023 and 199,288

Calculator

Solution

The third proportional to 129,023 and 199,288 is: 307,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,023 : 199,288 = 199,288 : x
  2. Step 2: Convert to fraction form
    129,023/199,288 = 199,288/x
  3. Step 3: Cross multiply
    129,023x = 199,288 × 199,288
  4. Step 4: Simplify right side
    129,023x = 39,715,706,944
  5. Step 5: Solve for x
    x = 39,715,706,944/129,023
  6. Step 6: Final answer
    x = 307,818.81

Related Problems

Find third proportional to 64,511.50 and 99,644
Half scale
Find third proportional to 258,046 and 398,576
Double scale
Find third proportional to 129,025 and 199,291
Similar ratio
Find third proportional to 193,534.50 and 298,932
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.