Home / 77,820.75-158,490

Finding the Third Proportional to 77,820.75 and 158,490

Calculator

Solution

The third proportional to 77,820.75 and 158,490 is: 322,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.75 : 158,490 = 158,490 : x
  2. Step 2: Convert to fraction form
    77,820.75/158,490 = 158,490/x
  3. Step 3: Cross multiply
    77,820.75x = 158,490 × 158,490
  4. Step 4: Simplify right side
    77,820.75x = 25,119,080,100
  5. Step 5: Solve for x
    x = 25,119,080,100/77,820.75
  6. Step 6: Final answer
    x = 322,781.26

Related Problems

Find third proportional to 38,910.38 and 79,245
Half scale
Find third proportional to 155,641.50 and 316,980
Double scale
Find third proportional to 77,823 and 158,494
Similar ratio
Find third proportional to 116,731.13 and 237,735
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.