Home / 64,629-138,618

Finding the Third Proportional to 64,629 and 138,618

Calculator

Solution

The third proportional to 64,629 and 138,618 is: 297,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,629 : 138,618 = 138,618 : x
  2. Step 2: Convert to fraction form
    64,629/138,618 = 138,618/x
  3. Step 3: Cross multiply
    64,629x = 138,618 × 138,618
  4. Step 4: Simplify right side
    64,629x = 19,214,949,924
  5. Step 5: Solve for x
    x = 19,214,949,924/64,629
  6. Step 6: Final answer
    x = 297,311.58

Related Problems

Find third proportional to 32,314.50 and 69,309
Half scale
Find third proportional to 129,258 and 277,236
Double scale
Find third proportional to 64,631 and 138,622
Similar ratio
Find third proportional to 96,943.50 and 207,927
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.