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Finding the Fourth Proportional to 119,399.75, 164,765.15 and 65,676.09

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Solution

The fourth proportional to 119,399.75, 164,765.15 and 65,676.09 is: 90,629.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,399.75 : 164,765.15 = 65,676.09 : x
  2. Step 2: Convert to fraction form
    119,399.75/164,765.15 = 65,676.09/x
  3. Step 3: Cross multiply
    119,399.75x = 164,765.15 × 65,676.09
  4. Step 4: Simplify right side
    119,399.75x = 10,821,130,491.88
  5. Step 5: Solve for x
    x = 10,821,130,491.88/119,399.75
  6. Step 6: Final answer
    x = 90,629.43

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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.