Home / 90,720-192,240

Finding the Third Proportional to 90,720 and 192,240

Calculator

Solution

The third proportional to 90,720 and 192,240 is: 407,365.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,720 : 192,240 = 192,240 : x
  2. Step 2: Convert to fraction form
    90,720/192,240 = 192,240/x
  3. Step 3: Cross multiply
    90,720x = 192,240 × 192,240
  4. Step 4: Simplify right side
    90,720x = 36,956,217,600
  5. Step 5: Solve for x
    x = 36,956,217,600/90,720
  6. Step 6: Final answer
    x = 407,365.71

Related Problems

Find third proportional to 45,360 and 96,120
Half scale
Find third proportional to 181,440 and 384,480
Double scale
Find third proportional to 90,722 and 192,244
Similar ratio
Find third proportional to 136,080 and 288,360
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.