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Finding the Fourth Proportional to 131,694.50, 181,738.19 and 74,345.89

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Solution

The fourth proportional to 131,694.50, 181,738.19 and 74,345.89 is: 102,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,694.50 : 181,738.19 = 74,345.89 : x
  2. Step 2: Convert to fraction form
    131,694.50/181,738.19 = 74,345.89/x
  3. Step 3: Cross multiply
    131,694.50x = 181,738.19 × 74,345.89
  4. Step 4: Simplify right side
    131,694.50x = 13,511,486,202.12
  5. Step 5: Solve for x
    x = 13,511,486,202.12/131,694.50
  6. Step 6: Final answer
    x = 102,597.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.