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Finding the Fourth Proportional to 185,879.08, 278,590.20 and 85,904.02

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Solution

The fourth proportional to 185,879.08, 278,590.20 and 85,904.02 is: 128,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,879.08 : 278,590.20 = 85,904.02 : x
  2. Step 2: Convert to fraction form
    185,879.08/278,590.20 = 85,904.02/x
  3. Step 3: Cross multiply
    185,879.08x = 278,590.20 × 85,904.02
  4. Step 4: Simplify right side
    185,879.08x = 23,932,018,112.60
  5. Step 5: Solve for x
    x = 23,932,018,112.60/185,879.08
  6. Step 6: Final answer
    x = 128,750.47

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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.