Home / 198,789.51-298,217.76-92,130.20

Finding the Fourth Proportional to 198,789.51, 298,217.76 and 92,130.20

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Solution

The fourth proportional to 198,789.51, 298,217.76 and 92,130.20 is: 138,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,789.51 : 298,217.76 = 92,130.20 : x
  2. Step 2: Convert to fraction form
    198,789.51/298,217.76 = 92,130.20/x
  3. Step 3: Cross multiply
    198,789.51x = 298,217.76 × 92,130.20
  4. Step 4: Simplify right side
    198,789.51x = 27,474,862,617.90
  5. Step 5: Solve for x
    x = 27,474,862,617.90/198,789.51
  6. Step 6: Final answer
    x = 138,210.83

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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.