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Finding the Fourth Proportional to 165,219.60, 247,690.08 and 71,654.88

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Solution

The fourth proportional to 165,219.60, 247,690.08 and 71,654.88 is: 107,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,219.60 : 247,690.08 = 71,654.88 : x
  2. Step 2: Convert to fraction form
    165,219.60/247,690.08 = 71,654.88/x
  3. Step 3: Cross multiply
    165,219.60x = 247,690.08 × 71,654.88
  4. Step 4: Simplify right side
    165,219.60x = 17,748,202,959.59
  5. Step 5: Solve for x
    x = 17,748,202,959.59/165,219.60
  6. Step 6: Final answer
    x = 107,421.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.