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Finding the Fourth Proportional to 117,234.46, 161,790.39 and 66,245.89

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Solution

The fourth proportional to 117,234.46, 161,790.39 and 66,245.89 is: 91,423.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,234.46 : 161,790.39 = 66,245.89 : x
  2. Step 2: Convert to fraction form
    117,234.46/161,790.39 = 66,245.89/x
  3. Step 3: Cross multiply
    117,234.46x = 161,790.39 × 66,245.89
  4. Step 4: Simplify right side
    117,234.46x = 10,717,948,379.00
  5. Step 5: Solve for x
    x = 10,717,948,379.00/117,234.46
  6. Step 6: Final answer
    x = 91,423.19

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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.