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Finding the Fourth Proportional to 158,815.67, 219,103.11 and 90,796.10

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Solution

The fourth proportional to 158,815.67, 219,103.11 and 90,796.10 is: 125,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,815.67 : 219,103.11 = 90,796.10 : x
  2. Step 2: Convert to fraction form
    158,815.67/219,103.11 = 90,796.10/x
  3. Step 3: Cross multiply
    158,815.67x = 219,103.11 × 90,796.10
  4. Step 4: Simplify right side
    158,815.67x = 19,893,706,790.36
  5. Step 5: Solve for x
    x = 19,893,706,790.36/158,815.67
  6. Step 6: Final answer
    x = 125,262.87

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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.