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Finding the Fourth Proportional to 119,780.94, 165,305.25 and 68,809.62

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Solution

The fourth proportional to 119,780.94, 165,305.25 and 68,809.62 is: 94,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,780.94 : 165,305.25 = 68,809.62 : x
  2. Step 2: Convert to fraction form
    119,780.94/165,305.25 = 68,809.62/x
  3. Step 3: Cross multiply
    119,780.94x = 165,305.25 × 68,809.62
  4. Step 4: Simplify right side
    119,780.94x = 11,374,591,436.51
  5. Step 5: Solve for x
    x = 11,374,591,436.51/119,780.94
  6. Step 6: Final answer
    x = 94,961.61

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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.