Home / 148,218-204,540.84-81,150

Finding the Fourth Proportional to 148,218, 204,540.84 and 81,150

Calculator

Solution

The fourth proportional to 148,218, 204,540.84 and 81,150 is: 111,987

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,218 : 204,540.84 = 81,150 : x
  2. Step 2: Convert to fraction form
    148,218/204,540.84 = 81,150/x
  3. Step 3: Cross multiply
    148,218x = 204,540.84 × 81,150
  4. Step 4: Simplify right side
    148,218x = 16,598,489,166
  5. Step 5: Solve for x
    x = 16,598,489,166/148,218
  6. Step 6: Final answer
    x = 111,987

Related Problems

Find fourth proportional to 74,109, 102,270.42 and 40,575
Half scale
Find fourth proportional to 296,436, 409,081.68 and 162,300
Double scale
Find fourth proportional to 148,219, 204,542.22 and 81,151
Similar ratio
Find fourth proportional to 222,327, 306,811.26 and 121,725
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.