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Finding the Fourth Proportional to 189,906.30, 284,902.65 and 110,979.90

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Solution

The fourth proportional to 189,906.30, 284,902.65 and 110,979.90 is: 166,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,906.30 : 284,902.65 = 110,979.90 : x
  2. Step 2: Convert to fraction form
    189,906.30/284,902.65 = 110,979.90/x
  3. Step 3: Cross multiply
    189,906.30x = 284,902.65 × 110,979.90
  4. Step 4: Simplify right side
    189,906.30x = 31,618,467,606.74
  5. Step 5: Solve for x
    x = 31,618,467,606.74/189,906.30
  6. Step 6: Final answer
    x = 166,495.10

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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.