Home / 38,220-79,139

Finding the Third Proportional to 38,220 and 79,139

Calculator

Solution

The third proportional to 38,220 and 79,139 is: 163,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,220 : 79,139 = 79,139 : x
  2. Step 2: Convert to fraction form
    38,220/79,139 = 79,139/x
  3. Step 3: Cross multiply
    38,220x = 79,139 × 79,139
  4. Step 4: Simplify right side
    38,220x = 6,262,981,321
  5. Step 5: Solve for x
    x = 6,262,981,321/38,220
  6. Step 6: Final answer
    x = 163,866.60

Related Problems

Find third proportional to 19,110 and 39,569.50
Half scale
Find third proportional to 76,440 and 158,278
Double scale
Find third proportional to 38,222 and 79,143
Similar ratio
Find third proportional to 57,330 and 118,708.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.