Home / 66,978-145,608

Finding the Third Proportional to 66,978 and 145,608

Calculator

Solution

The third proportional to 66,978 and 145,608 is: 316,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978 : 145,608 = 145,608 : x
  2. Step 2: Convert to fraction form
    66,978/145,608 = 145,608/x
  3. Step 3: Cross multiply
    66,978x = 145,608 × 145,608
  4. Step 4: Simplify right side
    66,978x = 21,201,689,664
  5. Step 5: Solve for x
    x = 21,201,689,664/66,978
  6. Step 6: Final answer
    x = 316,547.07

Related Problems

Find third proportional to 33,489 and 72,804
Half scale
Find third proportional to 133,956 and 291,216
Double scale
Find third proportional to 66,980 and 145,612
Similar ratio
Find third proportional to 100,467 and 218,412
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.