Home / 83,128-172,169

Finding the Third Proportional to 83,128 and 172,169

Calculator

Solution

The third proportional to 83,128 and 172,169 is: 356,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,128 : 172,169 = 172,169 : x
  2. Step 2: Convert to fraction form
    83,128/172,169 = 172,169/x
  3. Step 3: Cross multiply
    83,128x = 172,169 × 172,169
  4. Step 4: Simplify right side
    83,128x = 29,642,164,561
  5. Step 5: Solve for x
    x = 29,642,164,561/83,128
  6. Step 6: Final answer
    x = 356,584.60

Related Problems

Find third proportional to 41,564 and 86,084.50
Half scale
Find third proportional to 166,256 and 344,338
Double scale
Find third proportional to 83,130 and 172,173
Similar ratio
Find third proportional to 124,692 and 258,253.50
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.