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Finding the Fourth Proportional to 111,755, 167,245.74 and 69,042.89

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Solution

The fourth proportional to 111,755, 167,245.74 and 69,042.89 is: 103,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,755 : 167,245.74 = 69,042.89 : x
  2. Step 2: Convert to fraction form
    111,755/167,245.74 = 69,042.89/x
  3. Step 3: Cross multiply
    111,755x = 167,245.74 × 69,042.89
  4. Step 4: Simplify right side
    111,755x = 11,547,129,229.79
  5. Step 5: Solve for x
    x = 11,547,129,229.79/111,755
  6. Step 6: Final answer
    x = 103,325.39

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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.