Home / 127,418-178,215

Finding the Third Proportional to 127,418 and 178,215

Calculator

Solution

The third proportional to 127,418 and 178,215 is: 249,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,418 : 178,215 = 178,215 : x
  2. Step 2: Convert to fraction form
    127,418/178,215 = 178,215/x
  3. Step 3: Cross multiply
    127,418x = 178,215 × 178,215
  4. Step 4: Simplify right side
    127,418x = 31,760,586,225
  5. Step 5: Solve for x
    x = 31,760,586,225/127,418
  6. Step 6: Final answer
    x = 249,262.95

Related Problems

Find third proportional to 63,709 and 89,107.50
Half scale
Find third proportional to 254,836 and 356,430
Double scale
Find third proportional to 127,420 and 178,218
Similar ratio
Find third proportional to 191,127 and 267,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.