Home / 122,820-189,655

Finding the Third Proportional to 122,820 and 189,655

Calculator

Solution

The third proportional to 122,820 and 189,655 is: 292,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,820 : 189,655 = 189,655 : x
  2. Step 2: Convert to fraction form
    122,820/189,655 = 189,655/x
  3. Step 3: Cross multiply
    122,820x = 189,655 × 189,655
  4. Step 4: Simplify right side
    122,820x = 35,969,019,025
  5. Step 5: Solve for x
    x = 35,969,019,025/122,820
  6. Step 6: Final answer
    x = 292,859.62

Related Problems

Find third proportional to 61,410 and 94,827.50
Half scale
Find third proportional to 245,640 and 379,310
Double scale
Find third proportional to 122,822 and 189,658
Similar ratio
Find third proportional to 184,230 and 284,482.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.