Home / 86,324-178,640

Finding the Third Proportional to 86,324 and 178,640

Calculator

Solution

The third proportional to 86,324 and 178,640 is: 369,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,324 : 178,640 = 178,640 : x
  2. Step 2: Convert to fraction form
    86,324/178,640 = 178,640/x
  3. Step 3: Cross multiply
    86,324x = 178,640 × 178,640
  4. Step 4: Simplify right side
    86,324x = 31,912,249,600
  5. Step 5: Solve for x
    x = 31,912,249,600/86,324
  6. Step 6: Final answer
    x = 369,679.92

Related Problems

Find third proportional to 43,162 and 89,320
Half scale
Find third proportional to 172,648 and 357,280
Double scale
Find third proportional to 86,326 and 178,644
Similar ratio
Find third proportional to 129,486 and 267,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.