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Finding the Fourth Proportional to 201,204,046.70, 301,806,070.05 and 71,815,877.90

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Solution

The fourth proportional to 201,204,046.70, 301,806,070.05 and 71,815,877.90 is: 107,723,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,204,046.70 : 301,806,070.05 = 71,815,877.90 : x
  2. Step 2: Convert to fraction form
    201,204,046.70/301,806,070.05 = 71,815,877.90/x
  3. Step 3: Cross multiply
    201,204,046.70x = 301,806,070.05 × 71,815,877.90
  4. Step 4: Simplify right side
    201,204,046.70x = 21,674,467,876,189,648
  5. Step 5: Solve for x
    x = 21,674,467,876,189,648/201,204,046.70
  6. Step 6: Final answer
    x = 107,723,816.85

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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.