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Finding the Fourth Proportional to 178,954.92, 268,374.96 and 79,112.88

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Solution

The fourth proportional to 178,954.92, 268,374.96 and 79,112.88 is: 118,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,954.92 : 268,374.96 = 79,112.88 : x
  2. Step 2: Convert to fraction form
    178,954.92/268,374.96 = 79,112.88/x
  3. Step 3: Cross multiply
    178,954.92x = 268,374.96 × 79,112.88
  4. Step 4: Simplify right side
    178,954.92x = 21,231,916,005.48
  5. Step 5: Solve for x
    x = 21,231,916,005.48/178,954.92
  6. Step 6: Final answer
    x = 118,643.94

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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.