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Finding the Fourth Proportional to 136,618.85, 205,006.04 and 89,893.73

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Solution

The fourth proportional to 136,618.85, 205,006.04 and 89,893.73 is: 134,891.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,618.85 : 205,006.04 = 89,893.73 : x
  2. Step 2: Convert to fraction form
    136,618.85/205,006.04 = 89,893.73/x
  3. Step 3: Cross multiply
    136,618.85x = 205,006.04 × 89,893.73
  4. Step 4: Simplify right side
    136,618.85x = 18,428,756,133.63
  5. Step 5: Solve for x
    x = 18,428,756,133.63/136,618.85
  6. Step 6: Final answer
    x = 134,891.76

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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.