Home / 78,438-118,380

Finding the Third Proportional to 78,438 and 118,380

Calculator

Solution

The third proportional to 78,438 and 118,380 is: 178,661.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,438 : 118,380 = 118,380 : x
  2. Step 2: Convert to fraction form
    78,438/118,380 = 118,380/x
  3. Step 3: Cross multiply
    78,438x = 118,380 × 118,380
  4. Step 4: Simplify right side
    78,438x = 14,013,824,400
  5. Step 5: Solve for x
    x = 14,013,824,400/78,438
  6. Step 6: Final answer
    x = 178,661.16

Related Problems

Find third proportional to 39,219 and 59,190
Half scale
Find third proportional to 156,876 and 236,760
Double scale
Find third proportional to 78,440 and 118,383
Similar ratio
Find third proportional to 117,657 and 177,570
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.