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Finding the Fourth Proportional to 118,780.46, 163,917.08 and 65,067.41

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Solution

The fourth proportional to 118,780.46, 163,917.08 and 65,067.41 is: 89,793.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,780.46 : 163,917.08 = 65,067.41 : x
  2. Step 2: Convert to fraction form
    118,780.46/163,917.08 = 65,067.41/x
  3. Step 3: Cross multiply
    118,780.46x = 163,917.08 × 65,067.41
  4. Step 4: Simplify right side
    118,780.46x = 10,665,660,178.82
  5. Step 5: Solve for x
    x = 10,665,660,178.82/118,780.46
  6. Step 6: Final answer
    x = 89,793.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.