Home / 198,855.07-298,105.74-72,471.58

Finding the Fourth Proportional to 198,855.07, 298,105.74 and 72,471.58

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Solution

The fourth proportional to 198,855.07, 298,105.74 and 72,471.58 is: 108,642.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,855.07 : 298,105.74 = 72,471.58 : x
  2. Step 2: Convert to fraction form
    198,855.07/298,105.74 = 72,471.58/x
  3. Step 3: Cross multiply
    198,855.07x = 298,105.74 × 72,471.58
  4. Step 4: Simplify right side
    198,855.07x = 21,604,193,239.60
  5. Step 5: Solve for x
    x = 21,604,193,239.60/198,855.07
  6. Step 6: Final answer
    x = 108,642.91

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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.