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Finding the Fourth Proportional to 119,658.54, 165,129.44 and 68,667.21

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Solution

The fourth proportional to 119,658.54, 165,129.44 and 68,667.21 is: 94,761.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,658.54 : 165,129.44 = 68,667.21 : x
  2. Step 2: Convert to fraction form
    119,658.54/165,129.44 = 68,667.21/x
  3. Step 3: Cross multiply
    119,658.54x = 165,129.44 × 68,667.21
  4. Step 4: Simplify right side
    119,658.54x = 11,338,977,933.66
  5. Step 5: Solve for x
    x = 11,338,977,933.66/119,658.54
  6. Step 6: Final answer
    x = 94,761.13

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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.