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Finding the Fourth Proportional to 168,068.64, 252,141.84 and 74,581.68

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Solution

The fourth proportional to 168,068.64, 252,141.84 and 74,581.68 is: 111,889.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,068.64 : 252,141.84 = 74,581.68 : x
  2. Step 2: Convert to fraction form
    168,068.64/252,141.84 = 74,581.68/x
  3. Step 3: Cross multiply
    168,068.64x = 252,141.84 × 74,581.68
  4. Step 4: Simplify right side
    168,068.64x = 18,805,162,025.49
  5. Step 5: Solve for x
    x = 18,805,162,025.49/168,068.64
  6. Step 6: Final answer
    x = 111,889.77

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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.