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Finding the Fourth Proportional to 118,794.32, 178,200.24 and 39,908

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Solution

The fourth proportional to 118,794.32, 178,200.24 and 39,908 is: 59,864.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.32 : 178,200.24 = 39,908 : x
  2. Step 2: Convert to fraction form
    118,794.32/178,200.24 = 39,908/x
  3. Step 3: Cross multiply
    118,794.32x = 178,200.24 × 39,908
  4. Step 4: Simplify right side
    118,794.32x = 7,111,615,177.92
  5. Step 5: Solve for x
    x = 7,111,615,177.92/118,794.32
  6. Step 6: Final answer
    x = 59,864.94

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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.