Home / 198,819.84-298,137.60-74,127.36

Finding the Fourth Proportional to 198,819.84, 298,137.60 and 74,127.36

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Solution

The fourth proportional to 198,819.84, 298,137.60 and 74,127.36 is: 111,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,819.84 : 298,137.60 = 74,127.36 : x
  2. Step 2: Convert to fraction form
    198,819.84/298,137.60 = 74,127.36/x
  3. Step 3: Cross multiply
    198,819.84x = 298,137.60 × 74,127.36
  4. Step 4: Simplify right side
    198,819.84x = 22,100,153,204.74
  5. Step 5: Solve for x
    x = 22,100,153,204.74/198,819.84
  6. Step 6: Final answer
    x = 111,156.68

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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.