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Finding the Fourth Proportional to 119,819.88, 165,354.60 and 66,105.60

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Solution

The fourth proportional to 119,819.88, 165,354.60 and 66,105.60 is: 91,227.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,819.88 : 165,354.60 = 66,105.60 : x
  2. Step 2: Convert to fraction form
    119,819.88/165,354.60 = 66,105.60/x
  3. Step 3: Cross multiply
    119,819.88x = 165,354.60 × 66,105.60
  4. Step 4: Simplify right side
    119,819.88x = 10,930,865,045.76
  5. Step 5: Solve for x
    x = 10,930,865,045.76/119,819.88
  6. Step 6: Final answer
    x = 91,227.47

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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.