Home / 120,147.37-165,796.68-66,429.16

Finding the Fourth Proportional to 120,147.37, 165,796.68 and 66,429.16

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Solution

The fourth proportional to 120,147.37, 165,796.68 and 66,429.16 is: 91,668.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.37 : 165,796.68 = 66,429.16 : x
  2. Step 2: Convert to fraction form
    120,147.37/165,796.68 = 66,429.16/x
  3. Step 3: Cross multiply
    120,147.37x = 165,796.68 × 66,429.16
  4. Step 4: Simplify right side
    120,147.37x = 11,013,734,183.19
  5. Step 5: Solve for x
    x = 11,013,734,183.19/120,147.37
  6. Step 6: Final answer
    x = 91,668.54

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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.