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Finding the Fourth Proportional to 68,192.20, 102,000.30 and 61,222.60

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Solution

The fourth proportional to 68,192.20, 102,000.30 and 61,222.60 is: 91,575.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,192.20 : 102,000.30 = 61,222.60 : x
  2. Step 2: Convert to fraction form
    68,192.20/102,000.30 = 61,222.60/x
  3. Step 3: Cross multiply
    68,192.20x = 102,000.30 × 61,222.60
  4. Step 4: Simplify right side
    68,192.20x = 6,244,723,566.78
  5. Step 5: Solve for x
    x = 6,244,723,566.78/68,192.20
  6. Step 6: Final answer
    x = 91,575.34

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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.