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Finding the Fourth Proportional to 118,833.60, 178,277.40 and 39,955.80

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Solution

The fourth proportional to 118,833.60, 178,277.40 and 39,955.80 is: 59,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.60 : 178,277.40 = 39,955.80 : x
  2. Step 2: Convert to fraction form
    118,833.60/178,277.40 = 39,955.80/x
  3. Step 3: Cross multiply
    118,833.60x = 178,277.40 × 39,955.80
  4. Step 4: Simplify right side
    118,833.60x = 7,123,216,138.92
  5. Step 5: Solve for x
    x = 7,123,216,138.92/118,833.60
  6. Step 6: Final answer
    x = 59,942.78

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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.