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Finding the Fourth Proportional to 203,980.69, 281,492.44 and 113,351.41

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Solution

The fourth proportional to 203,980.69, 281,492.44 and 113,351.41 is: 156,424.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,980.69 : 281,492.44 = 113,351.41 : x
  2. Step 2: Convert to fraction form
    203,980.69/281,492.44 = 113,351.41/x
  3. Step 3: Cross multiply
    203,980.69x = 281,492.44 × 113,351.41
  4. Step 4: Simplify right side
    203,980.69x = 31,907,564,978.34
  5. Step 5: Solve for x
    x = 31,907,564,978.34/203,980.69
  6. Step 6: Final answer
    x = 156,424.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.