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Finding the Fourth Proportional to 119,991.69, 165,598.79 and 66,282.57

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Solution

The fourth proportional to 119,991.69, 165,598.79 and 66,282.57 is: 91,475.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,991.69 : 165,598.79 = 66,282.57 : x
  2. Step 2: Convert to fraction form
    119,991.69/165,598.79 = 66,282.57/x
  3. Step 3: Cross multiply
    119,991.69x = 165,598.79 × 66,282.57
  4. Step 4: Simplify right side
    119,991.69x = 10,976,313,058.68
  5. Step 5: Solve for x
    x = 10,976,313,058.68/119,991.69
  6. Step 6: Final answer
    x = 91,475.61

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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.