Home / 127.20-190.79

Finding the Third Proportional to 127.20 and 190.79

Calculator

Solution

The third proportional to 127.20 and 190.79 is: 286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.20 : 190.79 = 190.79 : x
  2. Step 2: Convert to fraction form
    127.20/190.79 = 190.79/x
  3. Step 3: Cross multiply
    127.20x = 190.79 × 190.79
  4. Step 4: Simplify right side
    127.20x = 36,401.96
  5. Step 5: Solve for x
    x = 36,401.96/127.20
  6. Step 6: Final answer
    x = 286.19

Related Problems

Find third proportional to 63.60 and 95.40
Half scale
Find third proportional to 254.39 and 381.59
Double scale
Find third proportional to 129 and 194
Similar ratio
Find third proportional to 190.79 and 286.19
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.