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Finding the Fourth Proportional to 201,385.73, 301,889.92 and 68,172.72

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Solution

The fourth proportional to 201,385.73, 301,889.92 and 68,172.72 is: 102,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,385.73 : 301,889.92 = 68,172.72 : x
  2. Step 2: Convert to fraction form
    201,385.73/301,889.92 = 68,172.72/x
  3. Step 3: Cross multiply
    201,385.73x = 301,889.92 × 68,172.72
  4. Step 4: Simplify right side
    201,385.73x = 20,580,656,986.98
  5. Step 5: Solve for x
    x = 20,580,656,986.98/201,385.73
  6. Step 6: Final answer
    x = 102,195.21

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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.