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Finding the Fourth Proportional to 131,985,654.27, 197,978,481.71 and 70,388,195.80

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Solution

The fourth proportional to 131,985,654.27, 197,978,481.71 and 70,388,195.80 is: 105,582,293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,985,654.27 : 197,978,481.71 = 70,388,195.80 : x
  2. Step 2: Convert to fraction form
    131,985,654.27/197,978,481.71 = 70,388,195.80/x
  3. Step 3: Cross multiply
    131,985,654.27x = 197,978,481.71 × 70,388,195.80
  4. Step 4: Simplify right side
    131,985,654.27x = 13,935,348,134,471,224
  5. Step 5: Solve for x
    x = 13,935,348,134,471,224/131,985,654.27
  6. Step 6: Final answer
    x = 105,582,293.86

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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.