Home / 120,622.40-180,933.60-101,268.80

Finding the Fourth Proportional to 120,622.40, 180,933.60 and 101,268.80

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Solution

The fourth proportional to 120,622.40, 180,933.60 and 101,268.80 is: 151,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,622.40 : 180,933.60 = 101,268.80 : x
  2. Step 2: Convert to fraction form
    120,622.40/180,933.60 = 101,268.80/x
  3. Step 3: Cross multiply
    120,622.40x = 180,933.60 × 101,268.80
  4. Step 4: Simplify right side
    120,622.40x = 18,322,928,551.68
  5. Step 5: Solve for x
    x = 18,322,928,551.68/120,622.40
  6. Step 6: Final answer
    x = 151,903.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.