Home / 68,855-145,981

Finding the Third Proportional to 68,855 and 145,981

Calculator

Solution

The third proportional to 68,855 and 145,981 is: 309,497.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855 : 145,981 = 145,981 : x
  2. Step 2: Convert to fraction form
    68,855/145,981 = 145,981/x
  3. Step 3: Cross multiply
    68,855x = 145,981 × 145,981
  4. Step 4: Simplify right side
    68,855x = 21,310,452,361
  5. Step 5: Solve for x
    x = 21,310,452,361/68,855
  6. Step 6: Final answer
    x = 309,497.53

Related Problems

Find third proportional to 34,427.50 and 72,990.50
Half scale
Find third proportional to 137,710 and 291,962
Double scale
Find third proportional to 68,857 and 145,985
Similar ratio
Find third proportional to 103,282.50 and 218,971.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.