Home / 185,905.08-278,629.20-85,930.02

Finding the Fourth Proportional to 185,905.08, 278,629.20 and 85,930.02

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Solution

The fourth proportional to 185,905.08, 278,629.20 and 85,930.02 is: 128,789.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,905.08 : 278,629.20 = 85,930.02 : x
  2. Step 2: Convert to fraction form
    185,905.08/278,629.20 = 85,930.02/x
  3. Step 3: Cross multiply
    185,905.08x = 278,629.20 × 85,930.02
  4. Step 4: Simplify right side
    185,905.08x = 23,942,612,728.58
  5. Step 5: Solve for x
    x = 23,942,612,728.58/185,905.08
  6. Step 6: Final answer
    x = 128,789.45

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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.