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Finding the Fourth Proportional to 108,861.60, 150,218.64 and 61,104

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Solution

The fourth proportional to 108,861.60, 150,218.64 and 61,104 is: 84,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,861.60 : 150,218.64 = 61,104 : x
  2. Step 2: Convert to fraction form
    108,861.60/150,218.64 = 61,104/x
  3. Step 3: Cross multiply
    108,861.60x = 150,218.64 × 61,104
  4. Step 4: Simplify right side
    108,861.60x = 9,178,959,778.56
  5. Step 5: Solve for x
    x = 9,178,959,778.56/108,861.60
  6. Step 6: Final answer
    x = 84,317.70

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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.