Home / 77,400-156,928

Finding the Third Proportional to 77,400 and 156,928

Calculator

Solution

The third proportional to 77,400 and 156,928 is: 318,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,400 : 156,928 = 156,928 : x
  2. Step 2: Convert to fraction form
    77,400/156,928 = 156,928/x
  3. Step 3: Cross multiply
    77,400x = 156,928 × 156,928
  4. Step 4: Simplify right side
    77,400x = 24,626,397,184
  5. Step 5: Solve for x
    x = 24,626,397,184/77,400
  6. Step 6: Final answer
    x = 318,170.51

Related Problems

Find third proportional to 38,700 and 78,464
Half scale
Find third proportional to 154,800 and 313,856
Double scale
Find third proportional to 77,402 and 156,932
Similar ratio
Find third proportional to 116,100 and 235,392
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.