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Finding the Fourth Proportional to 119,855.39, 165,400.92 and 66,141.96

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Solution

The fourth proportional to 119,855.39, 165,400.92 and 66,141.96 is: 91,276.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,855.39 : 165,400.92 = 66,141.96 : x
  2. Step 2: Convert to fraction form
    119,855.39/165,400.92 = 66,141.96/x
  3. Step 3: Cross multiply
    119,855.39x = 165,400.92 × 66,141.96
  4. Step 4: Simplify right side
    119,855.39x = 10,939,941,034.60
  5. Step 5: Solve for x
    x = 10,939,941,034.60/119,855.39
  6. Step 6: Final answer
    x = 91,276.17

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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.