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Finding the Fourth Proportional to 118,761.80, 178,169.56 and 39,873.94

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Solution

The fourth proportional to 118,761.80, 178,169.56 and 39,873.94 is: 59,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,761.80 : 178,169.56 = 39,873.94 : x
  2. Step 2: Convert to fraction form
    118,761.80/178,169.56 = 39,873.94/x
  3. Step 3: Cross multiply
    118,761.80x = 178,169.56 × 39,873.94
  4. Step 4: Simplify right side
    118,761.80x = 7,104,321,800.16
  5. Step 5: Solve for x
    x = 7,104,321,800.16/118,761.80
  6. Step 6: Final answer
    x = 59,819.93

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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.