Home / 124.75-178.75

Finding the Third Proportional to 124.75 and 178.75

Calculator

Solution

The third proportional to 124.75 and 178.75 is: 256.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.75 : 178.75 = 178.75 : x
  2. Step 2: Convert to fraction form
    124.75/178.75 = 178.75/x
  3. Step 3: Cross multiply
    124.75x = 178.75 × 178.75
  4. Step 4: Simplify right side
    124.75x = 31,951.56
  5. Step 5: Solve for x
    x = 31,951.56/124.75
  6. Step 6: Final answer
    x = 256.12

Related Problems

Find third proportional to 62.38 and 89.38
Half scale
Find third proportional to 249.50 and 357.50
Double scale
Find third proportional to 127 and 182
Similar ratio
Find third proportional to 187.13 and 268.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.