Home / 60,720-128,368

Finding the Third Proportional to 60,720 and 128,368

Calculator

Solution

The third proportional to 60,720 and 128,368 is: 271,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,720 : 128,368 = 128,368 : x
  2. Step 2: Convert to fraction form
    60,720/128,368 = 128,368/x
  3. Step 3: Cross multiply
    60,720x = 128,368 × 128,368
  4. Step 4: Simplify right side
    60,720x = 16,478,343,424
  5. Step 5: Solve for x
    x = 16,478,343,424/60,720
  6. Step 6: Final answer
    x = 271,382.47

Related Problems

Find third proportional to 30,360 and 64,184
Half scale
Find third proportional to 121,440 and 256,736
Double scale
Find third proportional to 60,722 and 128,372
Similar ratio
Find third proportional to 91,080 and 192,552
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.