Home / 198,780.37-298,106.97-65,635.81

Finding the Fourth Proportional to 198,780.37, 298,106.97 and 65,635.81

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Solution

The fourth proportional to 198,780.37, 298,106.97 and 65,635.81 is: 98,432.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,780.37 : 298,106.97 = 65,635.81 : x
  2. Step 2: Convert to fraction form
    198,780.37/298,106.97 = 65,635.81/x
  3. Step 3: Cross multiply
    198,780.37x = 298,106.97 × 65,635.81
  4. Step 4: Simplify right side
    198,780.37x = 19,566,491,451.19
  5. Step 5: Solve for x
    x = 19,566,491,451.19/198,780.37
  6. Step 6: Final answer
    x = 98,432.72

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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.