Home / 78,840-170,792

Finding the Third Proportional to 78,840 and 170,792

Calculator

Solution

The third proportional to 78,840 and 170,792 is: 369,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840 : 170,792 = 170,792 : x
  2. Step 2: Convert to fraction form
    78,840/170,792 = 170,792/x
  3. Step 3: Cross multiply
    78,840x = 170,792 × 170,792
  4. Step 4: Simplify right side
    78,840x = 29,169,907,264
  5. Step 5: Solve for x
    x = 29,169,907,264/78,840
  6. Step 6: Final answer
    x = 369,988.68

Related Problems

Find third proportional to 39,420 and 85,396
Half scale
Find third proportional to 157,680 and 341,584
Double scale
Find third proportional to 78,842 and 170,796
Similar ratio
Find third proportional to 118,260 and 256,188
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.