Home / 198,818.93-298,359.61-105,390.29

Finding the Fourth Proportional to 198,818.93, 298,359.61 and 105,390.29

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Solution

The fourth proportional to 198,818.93, 298,359.61 and 105,390.29 is: 158,154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,818.93 : 298,359.61 = 105,390.29 : x
  2. Step 2: Convert to fraction form
    198,818.93/298,359.61 = 105,390.29/x
  3. Step 3: Cross multiply
    198,818.93x = 298,359.61 × 105,390.29
  4. Step 4: Simplify right side
    198,818.93x = 31,444,204,922.75
  5. Step 5: Solve for x
    x = 31,444,204,922.75/198,818.93
  6. Step 6: Final answer
    x = 158,154.99

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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.