Home / 120,629.62-166,469.88-66,918.16

Finding the Fourth Proportional to 120,629.62, 166,469.88 and 66,918.16

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Solution

The fourth proportional to 120,629.62, 166,469.88 and 66,918.16 is: 92,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,629.62 : 166,469.88 = 66,918.16 : x
  2. Step 2: Convert to fraction form
    120,629.62/166,469.88 = 66,918.16/x
  3. Step 3: Cross multiply
    120,629.62x = 166,469.88 × 66,918.16
  4. Step 4: Simplify right side
    120,629.62x = 11,139,858,065.02
  5. Step 5: Solve for x
    x = 11,139,858,065.02/120,629.62
  6. Step 6: Final answer
    x = 92,347.62

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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.