Home / 55,371-129,991

Finding the Third Proportional to 55,371 and 129,991

Calculator

Solution

The third proportional to 55,371 and 129,991 is: 305,171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,371 : 129,991 = 129,991 : x
  2. Step 2: Convert to fraction form
    55,371/129,991 = 129,991/x
  3. Step 3: Cross multiply
    55,371x = 129,991 × 129,991
  4. Step 4: Simplify right side
    55,371x = 16,897,660,081
  5. Step 5: Solve for x
    x = 16,897,660,081/55,371
  6. Step 6: Final answer
    x = 305,171.66

Related Problems

Find third proportional to 27,685.50 and 64,995.50
Half scale
Find third proportional to 110,742 and 259,982
Double scale
Find third proportional to 55,373 and 129,996
Similar ratio
Find third proportional to 83,056.50 and 194,986.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.