Home / 138,354.75-210,403.50

Finding the Third Proportional to 138,354.75 and 210,403.50

Calculator

Solution

The third proportional to 138,354.75 and 210,403.50 is: 319,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,354.75 : 210,403.50 = 210,403.50 : x
  2. Step 2: Convert to fraction form
    138,354.75/210,403.50 = 210,403.50/x
  3. Step 3: Cross multiply
    138,354.75x = 210,403.50 × 210,403.50
  4. Step 4: Simplify right side
    138,354.75x = 44,269,632,812.25
  5. Step 5: Solve for x
    x = 44,269,632,812.25/138,354.75
  6. Step 6: Final answer
    x = 319,971.90

Related Problems

Find third proportional to 69,177.38 and 105,201.75
Half scale
Find third proportional to 276,709.50 and 420,807
Double scale
Find third proportional to 138,357 and 210,407
Similar ratio
Find third proportional to 207,532.13 and 315,605.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.