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Finding the Fourth Proportional to 131,482.78, 197,273.42 and 68,263.44

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Solution

The fourth proportional to 131,482.78, 197,273.42 and 68,263.44 is: 102,420.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,482.78 : 197,273.42 = 68,263.44 : x
  2. Step 2: Convert to fraction form
    131,482.78/197,273.42 = 68,263.44/x
  3. Step 3: Cross multiply
    131,482.78x = 197,273.42 × 68,263.44
  4. Step 4: Simplify right side
    131,482.78x = 13,466,562,269.76
  5. Step 5: Solve for x
    x = 13,466,562,269.76/131,482.78
  6. Step 6: Final answer
    x = 102,420.73

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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.