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Finding the Fourth Proportional to 168,857,905.20, 253,286,857.80 and 88,068,375.60

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Solution

The fourth proportional to 168,857,905.20, 253,286,857.80 and 88,068,375.60 is: 132,102,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,857,905.20 : 253,286,857.80 = 88,068,375.60 : x
  2. Step 2: Convert to fraction form
    168,857,905.20/253,286,857.80 = 88,068,375.60/x
  3. Step 3: Cross multiply
    168,857,905.20x = 253,286,857.80 × 88,068,375.60
  4. Step 4: Simplify right side
    168,857,905.20x = 22,306,562,127,274,188
  5. Step 5: Solve for x
    x = 22,306,562,127,274,188/168,857,905.20
  6. Step 6: Final answer
    x = 132,102,563.40

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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.