Home / 78,869-122,192

Finding the Third Proportional to 78,869 and 122,192

Calculator

Solution

The third proportional to 78,869 and 122,192 is: 189,312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869 : 122,192 = 122,192 : x
  2. Step 2: Convert to fraction form
    78,869/122,192 = 122,192/x
  3. Step 3: Cross multiply
    78,869x = 122,192 × 122,192
  4. Step 4: Simplify right side
    78,869x = 14,930,884,864
  5. Step 5: Solve for x
    x = 14,930,884,864/78,869
  6. Step 6: Final answer
    x = 189,312.47

Related Problems

Find third proportional to 39,434.50 and 61,096
Half scale
Find third proportional to 157,738 and 244,384
Double scale
Find third proportional to 78,871 and 122,195
Similar ratio
Find third proportional to 118,303.50 and 183,288
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.