Home / 68,985-142,911

Finding the Third Proportional to 68,985 and 142,911

Calculator

Solution

The third proportional to 68,985 and 142,911 is: 296,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,985 : 142,911 = 142,911 : x
  2. Step 2: Convert to fraction form
    68,985/142,911 = 142,911/x
  3. Step 3: Cross multiply
    68,985x = 142,911 × 142,911
  4. Step 4: Simplify right side
    68,985x = 20,423,553,921
  5. Step 5: Solve for x
    x = 20,423,553,921/68,985
  6. Step 6: Final answer
    x = 296,057.90

Related Problems

Find third proportional to 34,492.50 and 71,455.50
Half scale
Find third proportional to 137,970 and 285,822
Double scale
Find third proportional to 68,987 and 142,915
Similar ratio
Find third proportional to 103,477.50 and 214,366.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.