Home / 138,421.50-272,743.50

Finding the Third Proportional to 138,421.50 and 272,743.50

Calculator

Solution

The third proportional to 138,421.50 and 272,743.50 is: 537,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,421.50 : 272,743.50 = 272,743.50 : x
  2. Step 2: Convert to fraction form
    138,421.50/272,743.50 = 272,743.50/x
  3. Step 3: Cross multiply
    138,421.50x = 272,743.50 × 272,743.50
  4. Step 4: Simplify right side
    138,421.50x = 74,389,016,792.25
  5. Step 5: Solve for x
    x = 74,389,016,792.25/138,421.50
  6. Step 6: Final answer
    x = 537,409.41

Related Problems

Find third proportional to 69,210.75 and 136,371.75
Half scale
Find third proportional to 276,843 and 545,487
Double scale
Find third proportional to 138,424 and 272,747
Similar ratio
Find third proportional to 207,632.25 and 409,115.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.