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Finding the Fourth Proportional to 132,542.98, 198,939.03 and 69,408.42

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Solution

The fourth proportional to 132,542.98, 198,939.03 and 69,408.42 is: 104,177.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,542.98 : 198,939.03 = 69,408.42 : x
  2. Step 2: Convert to fraction form
    132,542.98/198,939.03 = 69,408.42/x
  3. Step 3: Cross multiply
    132,542.98x = 198,939.03 × 69,408.42
  4. Step 4: Simplify right side
    132,542.98x = 13,808,043,748.63
  5. Step 5: Solve for x
    x = 13,808,043,748.63/132,542.98
  6. Step 6: Final answer
    x = 104,177.86

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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.