Home / 78,126-124,215

Finding the Third Proportional to 78,126 and 124,215

Calculator

Solution

The third proportional to 78,126 and 124,215 is: 197,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126 : 124,215 = 124,215 : x
  2. Step 2: Convert to fraction form
    78,126/124,215 = 124,215/x
  3. Step 3: Cross multiply
    78,126x = 124,215 × 124,215
  4. Step 4: Simplify right side
    78,126x = 15,429,366,225
  5. Step 5: Solve for x
    x = 15,429,366,225/78,126
  6. Step 6: Final answer
    x = 197,493.36

Related Problems

Find third proportional to 39,063 and 62,107.50
Half scale
Find third proportional to 156,252 and 248,430
Double scale
Find third proportional to 78,128 and 124,218
Similar ratio
Find third proportional to 117,189 and 186,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.