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Finding the Fourth Proportional to 178,243.49, 245,884.01 and 120,863.39

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Solution

The fourth proportional to 178,243.49, 245,884.01 and 120,863.39 is: 166,729.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,243.49 : 245,884.01 = 120,863.39 : x
  2. Step 2: Convert to fraction form
    178,243.49/245,884.01 = 120,863.39/x
  3. Step 3: Cross multiply
    178,243.49x = 245,884.01 × 120,863.39
  4. Step 4: Simplify right side
    178,243.49x = 29,718,373,161.66
  5. Step 5: Solve for x
    x = 29,718,373,161.66/178,243.49
  6. Step 6: Final answer
    x = 166,729.09

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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.