Home / 66,600-142,992

Finding the Third Proportional to 66,600 and 142,992

Calculator

Solution

The third proportional to 66,600 and 142,992 is: 307,007.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600 : 142,992 = 142,992 : x
  2. Step 2: Convert to fraction form
    66,600/142,992 = 142,992/x
  3. Step 3: Cross multiply
    66,600x = 142,992 × 142,992
  4. Step 4: Simplify right side
    66,600x = 20,446,712,064
  5. Step 5: Solve for x
    x = 20,446,712,064/66,600
  6. Step 6: Final answer
    x = 307,007.69

Related Problems

Find third proportional to 33,300 and 71,496
Half scale
Find third proportional to 133,200 and 285,984
Double scale
Find third proportional to 66,602 and 142,996
Similar ratio
Find third proportional to 99,900 and 214,488
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.