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Finding the Fourth Proportional to 135,563.92, 186,844.52 and 90,160.68

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Solution

The fourth proportional to 135,563.92, 186,844.52 and 90,160.68 is: 124,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,563.92 : 186,844.52 = 90,160.68 : x
  2. Step 2: Convert to fraction form
    135,563.92/186,844.52 = 90,160.68/x
  3. Step 3: Cross multiply
    135,563.92x = 186,844.52 × 90,160.68
  4. Step 4: Simplify right side
    135,563.92x = 16,846,028,977.47
  5. Step 5: Solve for x
    x = 16,846,028,977.47/135,563.92
  6. Step 6: Final answer
    x = 124,266.32

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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.