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Finding the Fourth Proportional to 118,879.49, 178,335.89 and 38,923.71

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Solution

The fourth proportional to 118,879.49, 178,335.89 and 38,923.71 is: 58,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,879.49 : 178,335.89 = 38,923.71 : x
  2. Step 2: Convert to fraction form
    118,879.49/178,335.89 = 38,923.71/x
  3. Step 3: Cross multiply
    118,879.49x = 178,335.89 × 38,923.71
  4. Step 4: Simplify right side
    118,879.49x = 6,941,494,464.95
  5. Step 5: Solve for x
    x = 6,941,494,464.95/118,879.49
  6. Step 6: Final answer
    x = 58,391.02

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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.