Home / 121,574-261,129

Finding the Third Proportional to 121,574 and 261,129

Calculator

Solution

The third proportional to 121,574 and 261,129 is: 560,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,574 : 261,129 = 261,129 : x
  2. Step 2: Convert to fraction form
    121,574/261,129 = 261,129/x
  3. Step 3: Cross multiply
    121,574x = 261,129 × 261,129
  4. Step 4: Simplify right side
    121,574x = 68,188,354,641
  5. Step 5: Solve for x
    x = 68,188,354,641/121,574
  6. Step 6: Final answer
    x = 560,879.42

Related Problems

Find third proportional to 60,787 and 130,564.50
Half scale
Find third proportional to 243,148 and 522,258
Double scale
Find third proportional to 121,576 and 261,133
Similar ratio
Find third proportional to 182,361 and 391,693.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.