Home / 78,154-171,212

Finding the Third Proportional to 78,154 and 171,212

Calculator

Solution

The third proportional to 78,154 and 171,212 is: 375,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,154 : 171,212 = 171,212 : x
  2. Step 2: Convert to fraction form
    78,154/171,212 = 171,212/x
  3. Step 3: Cross multiply
    78,154x = 171,212 × 171,212
  4. Step 4: Simplify right side
    78,154x = 29,313,548,944
  5. Step 5: Solve for x
    x = 29,313,548,944/78,154
  6. Step 6: Final answer
    x = 375,074.20

Related Problems

Find third proportional to 39,077 and 85,606
Half scale
Find third proportional to 156,308 and 342,424
Double scale
Find third proportional to 78,156 and 171,216
Similar ratio
Find third proportional to 117,231 and 256,818
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.