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Finding the Fourth Proportional to 132,694.88, 183,119.46 and 78,979.64

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Solution

The fourth proportional to 132,694.88, 183,119.46 and 78,979.64 is: 108,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,694.88 : 183,119.46 = 78,979.64 : x
  2. Step 2: Convert to fraction form
    132,694.88/183,119.46 = 78,979.64/x
  3. Step 3: Cross multiply
    132,694.88x = 183,119.46 × 78,979.64
  4. Step 4: Simplify right side
    132,694.88x = 14,462,709,027.79
  5. Step 5: Solve for x
    x = 14,462,709,027.79/132,694.88
  6. Step 6: Final answer
    x = 108,992.22

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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.