Home / 66,340-145,280

Finding the Third Proportional to 66,340 and 145,280

Calculator

Solution

The third proportional to 66,340 and 145,280 is: 318,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,340 : 145,280 = 145,280 : x
  2. Step 2: Convert to fraction form
    66,340/145,280 = 145,280/x
  3. Step 3: Cross multiply
    66,340x = 145,280 × 145,280
  4. Step 4: Simplify right side
    66,340x = 21,106,278,400
  5. Step 5: Solve for x
    x = 21,106,278,400/66,340
  6. Step 6: Final answer
    x = 318,153.13

Related Problems

Find third proportional to 33,170 and 72,640
Half scale
Find third proportional to 132,680 and 290,560
Double scale
Find third proportional to 66,342 and 145,284
Similar ratio
Find third proportional to 99,510 and 217,920
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.