Home / 198,663.30-297,965.79-80,332.02

Finding the Fourth Proportional to 198,663.30, 297,965.79 and 80,332.02

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Solution

The fourth proportional to 198,663.30, 297,965.79 and 80,332.02 is: 120,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,663.30 : 297,965.79 = 80,332.02 : x
  2. Step 2: Convert to fraction form
    198,663.30/297,965.79 = 80,332.02/x
  3. Step 3: Cross multiply
    198,663.30x = 297,965.79 × 80,332.02
  4. Step 4: Simplify right side
    198,663.30x = 23,936,193,801.60
  5. Step 5: Solve for x
    x = 23,936,193,801.60/198,663.30
  6. Step 6: Final answer
    x = 120,486.24

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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.