Home / 63,688-138,430

Finding the Third Proportional to 63,688 and 138,430

Calculator

Solution

The third proportional to 63,688 and 138,430 is: 300,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,688 : 138,430 = 138,430 : x
  2. Step 2: Convert to fraction form
    63,688/138,430 = 138,430/x
  3. Step 3: Cross multiply
    63,688x = 138,430 × 138,430
  4. Step 4: Simplify right side
    63,688x = 19,162,864,900
  5. Step 5: Solve for x
    x = 19,162,864,900/63,688
  6. Step 6: Final answer
    x = 300,886.59

Related Problems

Find third proportional to 31,844 and 69,215
Half scale
Find third proportional to 127,376 and 276,860
Double scale
Find third proportional to 63,690 and 138,434
Similar ratio
Find third proportional to 95,532 and 207,645
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.