Home / 138,436-181,780

Finding the Third Proportional to 138,436 and 181,780

Calculator

Solution

The third proportional to 138,436 and 181,780 is: 238,694.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,436 : 181,780 = 181,780 : x
  2. Step 2: Convert to fraction form
    138,436/181,780 = 181,780/x
  3. Step 3: Cross multiply
    138,436x = 181,780 × 181,780
  4. Step 4: Simplify right side
    138,436x = 33,043,968,400
  5. Step 5: Solve for x
    x = 33,043,968,400/138,436
  6. Step 6: Final answer
    x = 238,694.91

Related Problems

Find third proportional to 69,218 and 90,890
Half scale
Find third proportional to 276,872 and 363,560
Double scale
Find third proportional to 138,438 and 181,783
Similar ratio
Find third proportional to 207,654 and 272,670
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.