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Finding the Fourth Proportional to 148,676.40, 205,165.90 and 88,249.68

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Solution

The fourth proportional to 148,676.40, 205,165.90 and 88,249.68 is: 121,780.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,676.40 : 205,165.90 = 88,249.68 : x
  2. Step 2: Convert to fraction form
    148,676.40/205,165.90 = 88,249.68/x
  3. Step 3: Cross multiply
    148,676.40x = 205,165.90 × 88,249.68
  4. Step 4: Simplify right side
    148,676.40x = 18,105,825,021.91
  5. Step 5: Solve for x
    x = 18,105,825,021.91/148,676.40
  6. Step 6: Final answer
    x = 121,780.09

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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.