Home / 91,386-138,861

Finding the Third Proportional to 91,386 and 138,861

Calculator

Solution

The third proportional to 91,386 and 138,861 is: 210,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,386 : 138,861 = 138,861 : x
  2. Step 2: Convert to fraction form
    91,386/138,861 = 138,861/x
  3. Step 3: Cross multiply
    91,386x = 138,861 × 138,861
  4. Step 4: Simplify right side
    91,386x = 19,282,377,321
  5. Step 5: Solve for x
    x = 19,282,377,321/91,386
  6. Step 6: Final answer
    x = 210,999.25

Related Problems

Find third proportional to 45,693 and 69,430.50
Half scale
Find third proportional to 182,772 and 277,722
Double scale
Find third proportional to 91,388 and 138,864
Similar ratio
Find third proportional to 137,079 and 208,291.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.