Home / 99,220-138,786

Finding the Third Proportional to 99,220 and 138,786

Calculator

Solution

The third proportional to 99,220 and 138,786 is: 194,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,220 : 138,786 = 138,786 : x
  2. Step 2: Convert to fraction form
    99,220/138,786 = 138,786/x
  3. Step 3: Cross multiply
    99,220x = 138,786 × 138,786
  4. Step 4: Simplify right side
    99,220x = 19,261,553,796
  5. Step 5: Solve for x
    x = 19,261,553,796/99,220
  6. Step 6: Final answer
    x = 194,129.75

Related Problems

Find third proportional to 49,610 and 69,393
Half scale
Find third proportional to 198,440 and 277,572
Double scale
Find third proportional to 99,222 and 138,789
Similar ratio
Find third proportional to 148,830 and 208,179
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.