Home / 66,668-144,640

Finding the Third Proportional to 66,668 and 144,640

Calculator

Solution

The third proportional to 66,668 and 144,640 is: 313,804.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668 : 144,640 = 144,640 : x
  2. Step 2: Convert to fraction form
    66,668/144,640 = 144,640/x
  3. Step 3: Cross multiply
    66,668x = 144,640 × 144,640
  4. Step 4: Simplify right side
    66,668x = 20,920,729,600
  5. Step 5: Solve for x
    x = 20,920,729,600/66,668
  6. Step 6: Final answer
    x = 313,804.67

Related Problems

Find third proportional to 33,334 and 72,320
Half scale
Find third proportional to 133,336 and 289,280
Double scale
Find third proportional to 66,670 and 144,644
Similar ratio
Find third proportional to 100,002 and 216,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.