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Finding the Fourth Proportional to 119,755.48, 165,259.56 and 66,039.70

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Solution

The fourth proportional to 119,755.48, 165,259.56 and 66,039.70 is: 91,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,755.48 : 165,259.56 = 66,039.70 : x
  2. Step 2: Convert to fraction form
    119,755.48/165,259.56 = 66,039.70/x
  3. Step 3: Cross multiply
    119,755.48x = 165,259.56 × 66,039.70
  4. Step 4: Simplify right side
    119,755.48x = 10,913,691,764.53
  5. Step 5: Solve for x
    x = 10,913,691,764.53/119,755.48
  6. Step 6: Final answer
    x = 91,133.13

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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.