Home / 66,408-143,880

Finding the Third Proportional to 66,408 and 143,880

Calculator

Solution

The third proportional to 66,408 and 143,880 is: 311,731.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,408 : 143,880 = 143,880 : x
  2. Step 2: Convert to fraction form
    66,408/143,880 = 143,880/x
  3. Step 3: Cross multiply
    66,408x = 143,880 × 143,880
  4. Step 4: Simplify right side
    66,408x = 20,701,454,400
  5. Step 5: Solve for x
    x = 20,701,454,400/66,408
  6. Step 6: Final answer
    x = 311,731.33

Related Problems

Find third proportional to 33,204 and 71,940
Half scale
Find third proportional to 132,816 and 287,760
Double scale
Find third proportional to 66,410 and 143,884
Similar ratio
Find third proportional to 99,612 and 215,820
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.