Home / 120,345-180,261

Finding the Third Proportional to 120,345 and 180,261

Calculator

Solution

The third proportional to 120,345 and 180,261 is: 270,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,345 : 180,261 = 180,261 : x
  2. Step 2: Convert to fraction form
    120,345/180,261 = 180,261/x
  3. Step 3: Cross multiply
    120,345x = 180,261 × 180,261
  4. Step 4: Simplify right side
    120,345x = 32,494,028,121
  5. Step 5: Solve for x
    x = 32,494,028,121/120,345
  6. Step 6: Final answer
    x = 270,007.30

Related Problems

Find third proportional to 60,172.50 and 90,130.50
Half scale
Find third proportional to 240,690 and 360,522
Double scale
Find third proportional to 120,347 and 180,264
Similar ratio
Find third proportional to 180,517.50 and 270,391.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.