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Finding the Fourth Proportional to 165,861.60, 248,889.60 and 60,691.20

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Solution

The fourth proportional to 165,861.60, 248,889.60 and 60,691.20 is: 91,072.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,861.60 : 248,889.60 = 60,691.20 : x
  2. Step 2: Convert to fraction form
    165,861.60/248,889.60 = 60,691.20/x
  3. Step 3: Cross multiply
    165,861.60x = 248,889.60 × 60,691.20
  4. Step 4: Simplify right side
    165,861.60x = 15,105,408,491.52
  5. Step 5: Solve for x
    x = 15,105,408,491.52/165,861.60
  6. Step 6: Final answer
    x = 91,072.37

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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.