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Finding the Fourth Proportional to 178,978.61, 267,883.75 and 131,581.15

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Solution

The fourth proportional to 178,978.61, 267,883.75 and 131,581.15 is: 196,942.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.61 : 267,883.75 = 131,581.15 : x
  2. Step 2: Convert to fraction form
    178,978.61/267,883.75 = 131,581.15/x
  3. Step 3: Cross multiply
    178,978.61x = 267,883.75 × 131,581.15
  4. Step 4: Simplify right side
    178,978.61x = 35,248,450,892.65
  5. Step 5: Solve for x
    x = 35,248,450,892.65/178,978.61
  6. Step 6: Final answer
    x = 196,942.26

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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.