Home / 198,837.88-298,256.78-72,487.60

Finding the Fourth Proportional to 198,837.88, 298,256.78 and 72,487.60

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Solution

The fourth proportional to 198,837.88, 298,256.78 and 72,487.60 is: 108,731.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,837.88 : 298,256.78 = 72,487.60 : x
  2. Step 2: Convert to fraction form
    198,837.88/298,256.78 = 72,487.60/x
  3. Step 3: Cross multiply
    198,837.88x = 298,256.78 × 72,487.60
  4. Step 4: Simplify right side
    198,837.88x = 21,619,918,165.93
  5. Step 5: Solve for x
    x = 21,619,918,165.93/198,837.88
  6. Step 6: Final answer
    x = 108,731.39

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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.