Home / 71,140-155,400

Finding the Third Proportional to 71,140 and 155,400

Calculator

Solution

The third proportional to 71,140 and 155,400 is: 339,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,140 : 155,400 = 155,400 : x
  2. Step 2: Convert to fraction form
    71,140/155,400 = 155,400/x
  3. Step 3: Cross multiply
    71,140x = 155,400 × 155,400
  4. Step 4: Simplify right side
    71,140x = 24,149,160,000
  5. Step 5: Solve for x
    x = 24,149,160,000/71,140
  6. Step 6: Final answer
    x = 339,459.66

Related Problems

Find third proportional to 35,570 and 77,700
Half scale
Find third proportional to 142,280 and 310,800
Double scale
Find third proportional to 71,142 and 155,404
Similar ratio
Find third proportional to 106,710 and 233,100
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.