Home / 66,271-142,430

Finding the Third Proportional to 66,271 and 142,430

Calculator

Solution

The third proportional to 66,271 and 142,430 is: 306,111.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,271 : 142,430 = 142,430 : x
  2. Step 2: Convert to fraction form
    66,271/142,430 = 142,430/x
  3. Step 3: Cross multiply
    66,271x = 142,430 × 142,430
  4. Step 4: Simplify right side
    66,271x = 20,286,304,900
  5. Step 5: Solve for x
    x = 20,286,304,900/66,271
  6. Step 6: Final answer
    x = 306,111.34

Related Problems

Find third proportional to 33,135.50 and 71,215
Half scale
Find third proportional to 132,542 and 284,860
Double scale
Find third proportional to 66,273 and 142,434
Similar ratio
Find third proportional to 99,406.50 and 213,645
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.