Home / 48.70-102.80

Finding the Third Proportional to 48.70 and 102.80

Calculator

Solution

The third proportional to 48.70 and 102.80 is: 216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.70 : 102.80 = 102.80 : x
  2. Step 2: Convert to fraction form
    48.70/102.80 = 102.80/x
  3. Step 3: Cross multiply
    48.70x = 102.80 × 102.80
  4. Step 4: Simplify right side
    48.70x = 10,567.20
  5. Step 5: Solve for x
    x = 10,567.20/48.70
  6. Step 6: Final answer
    x = 216.97

Related Problems

Find third proportional to 24.35 and 51.40
Half scale
Find third proportional to 97.41 and 205.59
Double scale
Find third proportional to 51 and 107
Similar ratio
Find third proportional to 73.05 and 154.20
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.