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Finding the Fourth Proportional to 159,336.38, 219,884.10 and 87,716.10

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Solution

The fourth proportional to 159,336.38, 219,884.10 and 87,716.10 is: 121,048.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,336.38 : 219,884.10 = 87,716.10 : x
  2. Step 2: Convert to fraction form
    159,336.38/219,884.10 = 87,716.10/x
  3. Step 3: Cross multiply
    159,336.38x = 219,884.10 × 87,716.10
  4. Step 4: Simplify right side
    159,336.38x = 19,287,375,704.01
  5. Step 5: Solve for x
    x = 19,287,375,704.01/159,336.38
  6. Step 6: Final answer
    x = 121,048.16

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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.