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Finding the Fourth Proportional to 137,652.05, 206,453.46 and 87,583.41

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Solution

The fourth proportional to 137,652.05, 206,453.46 and 87,583.41 is: 131,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,652.05 : 206,453.46 = 87,583.41 : x
  2. Step 2: Convert to fraction form
    137,652.05/206,453.46 = 87,583.41/x
  3. Step 3: Cross multiply
    137,652.05x = 206,453.46 × 87,583.41
  4. Step 4: Simplify right side
    137,652.05x = 18,081,898,033.10
  5. Step 5: Solve for x
    x = 18,081,898,033.10/137,652.05
  6. Step 6: Final answer
    x = 131,359.45

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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.