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Finding the Fourth Proportional to 199,959,459.01, 299,861,644.78 and 68,776,791.10

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Solution

The fourth proportional to 199,959,459.01, 299,861,644.78 and 68,776,791.10 is: 103,138,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,959,459.01 : 299,861,644.78 = 68,776,791.10 : x
  2. Step 2: Convert to fraction form
    199,959,459.01/299,861,644.78 = 68,776,791.10/x
  3. Step 3: Cross multiply
    199,959,459.01x = 299,861,644.78 × 68,776,791.10
  4. Step 4: Simplify right side
    199,959,459.01x = 20,623,521,701,272,780
  5. Step 5: Solve for x
    x = 20,623,521,701,272,780/199,959,459.01
  6. Step 6: Final answer
    x = 103,138,515.20

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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.