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Finding the Fourth Proportional to 118,717.60, 178,076.40 and 113,468.80

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Solution

The fourth proportional to 118,717.60, 178,076.40 and 113,468.80 is: 170,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,717.60 : 178,076.40 = 113,468.80 : x
  2. Step 2: Convert to fraction form
    118,717.60/178,076.40 = 113,468.80/x
  3. Step 3: Cross multiply
    118,717.60x = 178,076.40 × 113,468.80
  4. Step 4: Simplify right side
    118,717.60x = 20,206,115,416.32
  5. Step 5: Solve for x
    x = 20,206,115,416.32/118,717.60
  6. Step 6: Final answer
    x = 170,203.20

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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.