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Finding the Fourth Proportional to 119,912.82, 165,485.04 and 68,942.08

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Solution

The fourth proportional to 119,912.82, 165,485.04 and 68,942.08 is: 95,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,912.82 : 165,485.04 = 68,942.08 : x
  2. Step 2: Convert to fraction form
    119,912.82/165,485.04 = 68,942.08/x
  3. Step 3: Cross multiply
    119,912.82x = 165,485.04 × 68,942.08
  4. Step 4: Simplify right side
    119,912.82x = 11,408,882,866.48
  5. Step 5: Solve for x
    x = 11,408,882,866.48/119,912.82
  6. Step 6: Final answer
    x = 95,143.15

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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.