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Finding the Fourth Proportional to 132,906.40, 199,379.50 and 42,919.04

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Solution

The fourth proportional to 132,906.40, 199,379.50 and 42,919.04 is: 64,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,906.40 : 199,379.50 = 42,919.04 : x
  2. Step 2: Convert to fraction form
    132,906.40/199,379.50 = 42,919.04/x
  3. Step 3: Cross multiply
    132,906.40x = 199,379.50 × 42,919.04
  4. Step 4: Simplify right side
    132,906.40x = 8,557,176,735.68
  5. Step 5: Solve for x
    x = 8,557,176,735.68/132,906.40
  6. Step 6: Final answer
    x = 64,384.99

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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.