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Finding the Fourth Proportional to 102,906.60, 154,359.90 and 63,540.60

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Solution

The fourth proportional to 102,906.60, 154,359.90 and 63,540.60 is: 95,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,906.60 : 154,359.90 = 63,540.60 : x
  2. Step 2: Convert to fraction form
    102,906.60/154,359.90 = 63,540.60/x
  3. Step 3: Cross multiply
    102,906.60x = 154,359.90 × 63,540.60
  4. Step 4: Simplify right side
    102,906.60x = 9,808,120,661.94
  5. Step 5: Solve for x
    x = 9,808,120,661.94/102,906.60
  6. Step 6: Final answer
    x = 95,310.90

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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.