Home / 121,878-266,112

Finding the Third Proportional to 121,878 and 266,112

Calculator

Solution

The third proportional to 121,878 and 266,112 is: 581,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,878 : 266,112 = 266,112 : x
  2. Step 2: Convert to fraction form
    121,878/266,112 = 266,112/x
  3. Step 3: Cross multiply
    121,878x = 266,112 × 266,112
  4. Step 4: Simplify right side
    121,878x = 70,815,596,544
  5. Step 5: Solve for x
    x = 70,815,596,544/121,878
  6. Step 6: Final answer
    x = 581,036.75

Related Problems

Find third proportional to 60,939 and 133,056
Half scale
Find third proportional to 243,756 and 532,224
Double scale
Find third proportional to 121,880 and 266,116
Similar ratio
Find third proportional to 182,817 and 399,168
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.