Home / 66,644-145,321

Finding the Third Proportional to 66,644 and 145,321

Calculator

Solution

The third proportional to 66,644 and 145,321 is: 316,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644 : 145,321 = 145,321 : x
  2. Step 2: Convert to fraction form
    66,644/145,321 = 145,321/x
  3. Step 3: Cross multiply
    66,644x = 145,321 × 145,321
  4. Step 4: Simplify right side
    66,644x = 21,118,193,041
  5. Step 5: Solve for x
    x = 21,118,193,041/66,644
  6. Step 6: Final answer
    x = 316,880.64

Related Problems

Find third proportional to 33,322 and 72,660.50
Half scale
Find third proportional to 133,288 and 290,642
Double scale
Find third proportional to 66,646 and 145,325
Similar ratio
Find third proportional to 99,966 and 217,981.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.