Home / 198,979.40-298,491.02-65,811.16

Finding the Fourth Proportional to 198,979.40, 298,491.02 and 65,811.16

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Solution

The fourth proportional to 198,979.40, 298,491.02 and 65,811.16 is: 98,723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,979.40 : 298,491.02 = 65,811.16 : x
  2. Step 2: Convert to fraction form
    198,979.40/298,491.02 = 65,811.16/x
  3. Step 3: Cross multiply
    198,979.40x = 298,491.02 × 65,811.16
  4. Step 4: Simplify right side
    198,979.40x = 19,644,040,275.78
  5. Step 5: Solve for x
    x = 19,644,040,275.78/198,979.40
  6. Step 6: Final answer
    x = 98,723.99

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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.