Home / 71,379-153,720

Finding the Third Proportional to 71,379 and 153,720

Calculator

Solution

The third proportional to 71,379 and 153,720 is: 331,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379 : 153,720 = 153,720 : x
  2. Step 2: Convert to fraction form
    71,379/153,720 = 153,720/x
  3. Step 3: Cross multiply
    71,379x = 153,720 × 153,720
  4. Step 4: Simplify right side
    71,379x = 23,629,838,400
  5. Step 5: Solve for x
    x = 23,629,838,400/71,379
  6. Step 6: Final answer
    x = 331,047.48

Related Problems

Find third proportional to 35,689.50 and 76,860
Half scale
Find third proportional to 142,758 and 307,440
Double scale
Find third proportional to 71,381 and 153,724
Similar ratio
Find third proportional to 107,068.50 and 230,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.