Home / 72,615-108,918

Finding the Third Proportional to 72,615 and 108,918

Calculator

Solution

The third proportional to 72,615 and 108,918 is: 163,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,615 : 108,918 = 108,918 : x
  2. Step 2: Convert to fraction form
    72,615/108,918 = 108,918/x
  3. Step 3: Cross multiply
    72,615x = 108,918 × 108,918
  4. Step 4: Simplify right side
    72,615x = 11,863,130,724
  5. Step 5: Solve for x
    x = 11,863,130,724/72,615
  6. Step 6: Final answer
    x = 163,370.25

Related Problems

Find third proportional to 36,307.50 and 54,459
Half scale
Find third proportional to 145,230 and 217,836
Double scale
Find third proportional to 72,617 and 108,921
Similar ratio
Find third proportional to 108,922.50 and 163,377
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.