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Finding the Fourth Proportional to 111,976, 167,962.96 and 45,400.30

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Solution

The fourth proportional to 111,976, 167,962.96 and 45,400.30 is: 68,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,976 : 167,962.96 = 45,400.30 : x
  2. Step 2: Convert to fraction form
    111,976/167,962.96 = 45,400.30/x
  3. Step 3: Cross multiply
    111,976x = 167,962.96 × 45,400.30
  4. Step 4: Simplify right side
    111,976x = 7,625,568,772.89
  5. Step 5: Solve for x
    x = 7,625,568,772.89/111,976
  6. Step 6: Final answer
    x = 68,100.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.