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Finding the Fourth Proportional to 159,940.56, 240,066.36 and 76,892.88

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Solution

The fourth proportional to 159,940.56, 240,066.36 and 76,892.88 is: 115,414.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,940.56 : 240,066.36 = 76,892.88 : x
  2. Step 2: Convert to fraction form
    159,940.56/240,066.36 = 76,892.88/x
  3. Step 3: Cross multiply
    159,940.56x = 240,066.36 × 76,892.88
  4. Step 4: Simplify right side
    159,940.56x = 18,459,393,811.52
  5. Step 5: Solve for x
    x = 18,459,393,811.52/159,940.56
  6. Step 6: Final answer
    x = 115,414.09

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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.