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Finding the Fourth Proportional to 178,992.12, 246,954.42 and 117,720.84

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Solution

The fourth proportional to 178,992.12, 246,954.42 and 117,720.84 is: 162,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,992.12 : 246,954.42 = 117,720.84 : x
  2. Step 2: Convert to fraction form
    178,992.12/246,954.42 = 117,720.84/x
  3. Step 3: Cross multiply
    178,992.12x = 246,954.42 × 117,720.84
  4. Step 4: Simplify right side
    178,992.12x = 29,071,681,764.11
  5. Step 5: Solve for x
    x = 29,071,681,764.11/178,992.12
  6. Step 6: Final answer
    x = 162,418.78

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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.