Home / 204,052.15-306,078.23-128,928.70

Finding the Fourth Proportional to 204,052.15, 306,078.23 and 128,928.70

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Solution

The fourth proportional to 204,052.15, 306,078.23 and 128,928.70 is: 193,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,052.15 : 306,078.23 = 128,928.70 : x
  2. Step 2: Convert to fraction form
    204,052.15/306,078.23 = 128,928.70/x
  3. Step 3: Cross multiply
    204,052.15x = 306,078.23 × 128,928.70
  4. Step 4: Simplify right side
    204,052.15x = 39,462,268,292.20
  5. Step 5: Solve for x
    x = 39,462,268,292.20/204,052.15
  6. Step 6: Final answer
    x = 193,393.05

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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.