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Finding the Fourth Proportional to 119,660.90, 165,131.87 and 65,945.88

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Solution

The fourth proportional to 119,660.90, 165,131.87 and 65,945.88 is: 91,005.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,660.90 : 165,131.87 = 65,945.88 : x
  2. Step 2: Convert to fraction form
    119,660.90/165,131.87 = 65,945.88/x
  3. Step 3: Cross multiply
    119,660.90x = 165,131.87 × 65,945.88
  4. Step 4: Simplify right side
    119,660.90x = 10,889,766,153.47
  5. Step 5: Solve for x
    x = 10,889,766,153.47/119,660.90
  6. Step 6: Final answer
    x = 91,005.22

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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.