Home / 70,259-105,390

Finding the Third Proportional to 70,259 and 105,390

Calculator

Solution

The third proportional to 70,259 and 105,390 is: 158,087.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,259 : 105,390 = 105,390 : x
  2. Step 2: Convert to fraction form
    70,259/105,390 = 105,390/x
  3. Step 3: Cross multiply
    70,259x = 105,390 × 105,390
  4. Step 4: Simplify right side
    70,259x = 11,107,052,100
  5. Step 5: Solve for x
    x = 11,107,052,100/70,259
  6. Step 6: Final answer
    x = 158,087.25

Related Problems

Find third proportional to 35,129.50 and 52,695
Half scale
Find third proportional to 140,518 and 210,780
Double scale
Find third proportional to 70,261 and 105,393
Similar ratio
Find third proportional to 105,388.50 and 158,085
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.