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Finding the Fourth Proportional to 136,395.09, 204,461.41 and 69,866.55

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Solution

The fourth proportional to 136,395.09, 204,461.41 and 69,866.55 is: 104,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,395.09 : 204,461.41 = 69,866.55 : x
  2. Step 2: Convert to fraction form
    136,395.09/204,461.41 = 69,866.55/x
  3. Step 3: Cross multiply
    136,395.09x = 204,461.41 × 69,866.55
  4. Step 4: Simplify right side
    136,395.09x = 14,285,013,324.84
  5. Step 5: Solve for x
    x = 14,285,013,324.84/136,395.09
  6. Step 6: Final answer
    x = 104,732.61

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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.