Home / 66,301-136,428

Finding the Third Proportional to 66,301 and 136,428

Calculator

Solution

The third proportional to 66,301 and 136,428 is: 280,728.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,301 : 136,428 = 136,428 : x
  2. Step 2: Convert to fraction form
    66,301/136,428 = 136,428/x
  3. Step 3: Cross multiply
    66,301x = 136,428 × 136,428
  4. Step 4: Simplify right side
    66,301x = 18,612,599,184
  5. Step 5: Solve for x
    x = 18,612,599,184/66,301
  6. Step 6: Final answer
    x = 280,728.79

Related Problems

Find third proportional to 33,150.50 and 68,214
Half scale
Find third proportional to 132,602 and 272,856
Double scale
Find third proportional to 66,303 and 136,432
Similar ratio
Find third proportional to 99,451.50 and 204,642
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.