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Finding the Fourth Proportional to 159,272.26, 219,791.29 and 90,374.27

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Solution

The fourth proportional to 159,272.26, 219,791.29 and 90,374.27 is: 124,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,272.26 : 219,791.29 = 90,374.27 : x
  2. Step 2: Convert to fraction form
    159,272.26/219,791.29 = 90,374.27/x
  3. Step 3: Cross multiply
    159,272.26x = 219,791.29 × 90,374.27
  4. Step 4: Simplify right side
    159,272.26x = 19,863,476,230.67
  5. Step 5: Solve for x
    x = 19,863,476,230.67/159,272.26
  6. Step 6: Final answer
    x = 124,713.97

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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.