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Finding the Fourth Proportional to 119,743.66, 165,242.72 and 66,028.66

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Solution

The fourth proportional to 119,743.66, 165,242.72 and 66,028.66 is: 91,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,743.66 : 165,242.72 = 66,028.66 : x
  2. Step 2: Convert to fraction form
    119,743.66/165,242.72 = 66,028.66/x
  3. Step 3: Cross multiply
    119,743.66x = 165,242.72 × 66,028.66
  4. Step 4: Simplify right side
    119,743.66x = 10,910,755,376.36
  5. Step 5: Solve for x
    x = 10,910,755,376.36/119,743.66
  6. Step 6: Final answer
    x = 91,117.60

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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.