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Finding the Fourth Proportional to 168,291,990.90, 252,437,986.35 and 150,152,138.10

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Solution

The fourth proportional to 168,291,990.90, 252,437,986.35 and 150,152,138.10 is: 225,228,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,291,990.90 : 252,437,986.35 = 150,152,138.10 : x
  2. Step 2: Convert to fraction form
    168,291,990.90/252,437,986.35 = 150,152,138.10/x
  3. Step 3: Cross multiply
    168,291,990.90x = 252,437,986.35 × 150,152,138.10
  4. Step 4: Simplify right side
    168,291,990.90x = 37,904,103,388,111,112
  5. Step 5: Solve for x
    x = 37,904,103,388,111,112/168,291,990.90
  6. Step 6: Final answer
    x = 225,228,207.15

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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.