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Finding the Fourth Proportional to 108,834.75, 150,183.72 and 61,078.87

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Solution

The fourth proportional to 108,834.75, 150,183.72 and 61,078.87 is: 84,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,834.75 : 150,183.72 = 61,078.87 : x
  2. Step 2: Convert to fraction form
    108,834.75/150,183.72 = 61,078.87/x
  3. Step 3: Cross multiply
    108,834.75x = 150,183.72 × 61,078.87
  4. Step 4: Simplify right side
    108,834.75x = 9,173,051,493.22
  5. Step 5: Solve for x
    x = 9,173,051,493.22/108,834.75
  6. Step 6: Final answer
    x = 84,284.22

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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.