Home / 120,510-187,209

Finding the Third Proportional to 120,510 and 187,209

Calculator

Solution

The third proportional to 120,510 and 187,209 is: 290,824.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,510 : 187,209 = 187,209 : x
  2. Step 2: Convert to fraction form
    120,510/187,209 = 187,209/x
  3. Step 3: Cross multiply
    120,510x = 187,209 × 187,209
  4. Step 4: Simplify right side
    120,510x = 35,047,209,681
  5. Step 5: Solve for x
    x = 35,047,209,681/120,510
  6. Step 6: Final answer
    x = 290,824.08

Related Problems

Find third proportional to 60,255 and 93,604.50
Half scale
Find third proportional to 241,020 and 374,418
Double scale
Find third proportional to 120,512 and 187,212
Similar ratio
Find third proportional to 180,765 and 280,813.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.