Home / 198,628.13-297,848.89-72,179.20

Finding the Fourth Proportional to 198,628.13, 297,848.89 and 72,179.20

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Solution

The fourth proportional to 198,628.13, 297,848.89 and 72,179.20 is: 108,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,628.13 : 297,848.89 = 72,179.20 : x
  2. Step 2: Convert to fraction form
    198,628.13/297,848.89 = 72,179.20/x
  3. Step 3: Cross multiply
    198,628.13x = 297,848.89 × 72,179.20
  4. Step 4: Simplify right side
    198,628.13x = 21,498,494,601.09
  5. Step 5: Solve for x
    x = 21,498,494,601.09/198,628.13
  6. Step 6: Final answer
    x = 108,234.89

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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.