Home / 198,648.12-298,159.44-72,410.38

Finding the Fourth Proportional to 198,648.12, 298,159.44 and 72,410.38

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Solution

The fourth proportional to 198,648.12, 298,159.44 and 72,410.38 is: 108,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,648.12 : 298,159.44 = 72,410.38 : x
  2. Step 2: Convert to fraction form
    198,648.12/298,159.44 = 72,410.38/x
  3. Step 3: Cross multiply
    198,648.12x = 298,159.44 × 72,410.38
  4. Step 4: Simplify right side
    198,648.12x = 21,589,838,350.99
  5. Step 5: Solve for x
    x = 21,589,838,350.99/198,648.12
  6. Step 6: Final answer
    x = 108,683.83

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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.