Home / 79,139-161,205

Finding the Third Proportional to 79,139 and 161,205

Calculator

Solution

The third proportional to 79,139 and 161,205 is: 328,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139 : 161,205 = 161,205 : x
  2. Step 2: Convert to fraction form
    79,139/161,205 = 161,205/x
  3. Step 3: Cross multiply
    79,139x = 161,205 × 161,205
  4. Step 4: Simplify right side
    79,139x = 25,987,052,025
  5. Step 5: Solve for x
    x = 25,987,052,025/79,139
  6. Step 6: Final answer
    x = 328,372.26

Related Problems

Find third proportional to 39,569.50 and 80,602.50
Half scale
Find third proportional to 158,278 and 322,410
Double scale
Find third proportional to 79,141 and 161,209
Similar ratio
Find third proportional to 118,708.50 and 241,807.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.