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Finding the Fourth Proportional to 131,541.98, 197,251.62 and 68,345.11

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Solution

The fourth proportional to 131,541.98, 197,251.62 and 68,345.11 is: 102,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,541.98 : 197,251.62 = 68,345.11 : x
  2. Step 2: Convert to fraction form
    131,541.98/197,251.62 = 68,345.11/x
  3. Step 3: Cross multiply
    131,541.98x = 197,251.62 × 68,345.11
  4. Step 4: Simplify right side
    131,541.98x = 13,481,183,666.58
  5. Step 5: Solve for x
    x = 13,481,183,666.58/131,541.98
  6. Step 6: Final answer
    x = 102,485.79

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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.