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Finding the Fourth Proportional to 161,709.48, 242,562.60 and 115,257.60

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Solution

The fourth proportional to 161,709.48, 242,562.60 and 115,257.60 is: 172,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,709.48 : 242,562.60 = 115,257.60 : x
  2. Step 2: Convert to fraction form
    161,709.48/242,562.60 = 115,257.60/x
  3. Step 3: Cross multiply
    161,709.48x = 242,562.60 × 115,257.60
  4. Step 4: Simplify right side
    161,709.48x = 27,957,183,125.76
  5. Step 5: Solve for x
    x = 27,957,183,125.76/161,709.48
  6. Step 6: Final answer
    x = 172,885.25

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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.