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Finding the Fourth Proportional to 181,563.90, 272,078.55 and 131,748.90

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Solution

The fourth proportional to 181,563.90, 272,078.55 and 131,748.90 is: 197,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,563.90 : 272,078.55 = 131,748.90 : x
  2. Step 2: Convert to fraction form
    181,563.90/272,078.55 = 131,748.90/x
  3. Step 3: Cross multiply
    181,563.90x = 272,078.55 × 131,748.90
  4. Step 4: Simplify right side
    181,563.90x = 35,846,049,676.10
  5. Step 5: Solve for x
    x = 35,846,049,676.10/181,563.90
  6. Step 6: Final answer
    x = 197,429.39

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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.