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Finding the Fourth Proportional to 168,085,366.20, 251,978,750.10 and 99,855,631.80

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Solution

The fourth proportional to 168,085,366.20, 251,978,750.10 and 99,855,631.80 is: 149,694,752.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,085,366.20 : 251,978,750.10 = 99,855,631.80 : x
  2. Step 2: Convert to fraction form
    168,085,366.20/251,978,750.10 = 99,855,631.80/x
  3. Step 3: Cross multiply
    168,085,366.20x = 251,978,750.10 × 99,855,631.80
  4. Step 4: Simplify right side
    168,085,366.20x = 25,161,497,291,409,812
  5. Step 5: Solve for x
    x = 25,161,497,291,409,812/168,085,366.20
  6. Step 6: Final answer
    x = 149,694,752.50

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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.