Home / 88.75-138.50

Finding the Third Proportional to 88.75 and 138.50

Calculator

Solution

The third proportional to 88.75 and 138.50 is: 216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.75 : 138.50 = 138.50 : x
  2. Step 2: Convert to fraction form
    88.75/138.50 = 138.50/x
  3. Step 3: Cross multiply
    88.75x = 138.50 × 138.50
  4. Step 4: Simplify right side
    88.75x = 19,182.25
  5. Step 5: Solve for x
    x = 19,182.25/88.75
  6. Step 6: Final answer
    x = 216.14

Related Problems

Find third proportional to 44.38 and 69.25
Half scale
Find third proportional to 177.50 and 277
Double scale
Find third proportional to 91 and 142
Similar ratio
Find third proportional to 133.13 and 207.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.