Home / 68,689-145,802

Finding the Third Proportional to 68,689 and 145,802

Calculator

Solution

The third proportional to 68,689 and 145,802 is: 309,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,689 : 145,802 = 145,802 : x
  2. Step 2: Convert to fraction form
    68,689/145,802 = 145,802/x
  3. Step 3: Cross multiply
    68,689x = 145,802 × 145,802
  4. Step 4: Simplify right side
    68,689x = 21,258,223,204
  5. Step 5: Solve for x
    x = 21,258,223,204/68,689
  6. Step 6: Final answer
    x = 309,485.12

Related Problems

Find third proportional to 34,344.50 and 72,901
Half scale
Find third proportional to 137,378 and 291,604
Double scale
Find third proportional to 68,691 and 145,806
Similar ratio
Find third proportional to 103,033.50 and 218,703
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.