Home / 198,646.62-298,157.20-72,408.88

Finding the Fourth Proportional to 198,646.62, 298,157.20 and 72,408.88

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Solution

The fourth proportional to 198,646.62, 298,157.20 and 72,408.88 is: 108,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,646.62 : 298,157.20 = 72,408.88 : x
  2. Step 2: Convert to fraction form
    198,646.62/298,157.20 = 72,408.88/x
  3. Step 3: Cross multiply
    198,646.62x = 298,157.20 × 72,408.88
  4. Step 4: Simplify right side
    198,646.62x = 21,589,228,553.89
  5. Step 5: Solve for x
    x = 21,589,228,553.89/198,646.62
  6. Step 6: Final answer
    x = 108,681.58

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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.