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Finding the Fourth Proportional to 168,791,608.80, 253,027,980.90 and 99,757,422.90

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Solution

The fourth proportional to 168,791,608.80, 253,027,980.90 and 99,757,422.90 is: 149,541,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,791,608.80 : 253,027,980.90 = 99,757,422.90 : x
  2. Step 2: Convert to fraction form
    168,791,608.80/253,027,980.90 = 99,757,422.90/x
  3. Step 3: Cross multiply
    168,791,608.80x = 253,027,980.90 × 99,757,422.90
  4. Step 4: Simplify right side
    168,791,608.80x = 25,241,419,296,174,424
  5. Step 5: Solve for x
    x = 25,241,419,296,174,424/168,791,608.80
  6. Step 6: Final answer
    x = 149,541,908.37

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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.