Home / 81,120-178,224

Finding the Third Proportional to 81,120 and 178,224

Calculator

Solution

The third proportional to 81,120 and 178,224 is: 391,565.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,120 : 178,224 = 178,224 : x
  2. Step 2: Convert to fraction form
    81,120/178,224 = 178,224/x
  3. Step 3: Cross multiply
    81,120x = 178,224 × 178,224
  4. Step 4: Simplify right side
    81,120x = 31,763,794,176
  5. Step 5: Solve for x
    x = 31,763,794,176/81,120
  6. Step 6: Final answer
    x = 391,565.51

Related Problems

Find third proportional to 40,560 and 89,112
Half scale
Find third proportional to 162,240 and 356,448
Double scale
Find third proportional to 81,122 and 178,228
Similar ratio
Find third proportional to 121,680 and 267,336
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.