Home / 198,653.50-298,167.51-72,415.75

Finding the Fourth Proportional to 198,653.50, 298,167.51 and 72,415.75

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Solution

The fourth proportional to 198,653.50, 298,167.51 and 72,415.75 is: 108,691.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,653.50 : 298,167.51 = 72,415.75 : x
  2. Step 2: Convert to fraction form
    198,653.50/298,167.51 = 72,415.75/x
  3. Step 3: Cross multiply
    198,653.50x = 298,167.51 × 72,415.75
  4. Step 4: Simplify right side
    198,653.50x = 21,592,023,862.28
  5. Step 5: Solve for x
    x = 21,592,023,862.28/198,653.50
  6. Step 6: Final answer
    x = 108,691.89

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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.