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Finding the Fourth Proportional to 153,251.67, 229,578.62 and 86,489.85

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Solution

The fourth proportional to 153,251.67, 229,578.62 and 86,489.85 is: 129,566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,251.67 : 229,578.62 = 86,489.85 : x
  2. Step 2: Convert to fraction form
    153,251.67/229,578.62 = 86,489.85/x
  3. Step 3: Cross multiply
    153,251.67x = 229,578.62 × 86,489.85
  4. Step 4: Simplify right side
    153,251.67x = 19,856,219,974.56
  5. Step 5: Solve for x
    x = 19,856,219,974.56/153,251.67
  6. Step 6: Final answer
    x = 129,566.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.