Home / 50.15-82.90

Finding the Third Proportional to 50.15 and 82.90

Calculator

Solution

The third proportional to 50.15 and 82.90 is: 137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.15 : 82.90 = 82.90 : x
  2. Step 2: Convert to fraction form
    50.15/82.90 = 82.90/x
  3. Step 3: Cross multiply
    50.15x = 82.90 × 82.90
  4. Step 4: Simplify right side
    50.15x = 6,872.15
  5. Step 5: Solve for x
    x = 6,872.15/50.15
  6. Step 6: Final answer
    x = 137.03

Related Problems

Find third proportional to 25.08 and 41.45
Half scale
Find third proportional to 100.30 and 165.80
Double scale
Find third proportional to 52 and 86
Similar ratio
Find third proportional to 75.23 and 124.35
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.