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Finding the Fourth Proportional to 119,703.60, 165,183.84 and 65,990.88

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Solution

The fourth proportional to 119,703.60, 165,183.84 and 65,990.88 is: 91,063.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,703.60 : 165,183.84 = 65,990.88 : x
  2. Step 2: Convert to fraction form
    119,703.60/165,183.84 = 65,990.88/x
  3. Step 3: Cross multiply
    119,703.60x = 165,183.84 × 65,990.88
  4. Step 4: Simplify right side
    119,703.60x = 10,900,626,963.38
  5. Step 5: Solve for x
    x = 10,900,626,963.38/119,703.60
  6. Step 6: Final answer
    x = 91,063.48

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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.