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Finding the Fourth Proportional to 111,815.80, 167,594.10 and 45,212.20

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Solution

The fourth proportional to 111,815.80, 167,594.10 and 45,212.20 is: 67,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,815.80 : 167,594.10 = 45,212.20 : x
  2. Step 2: Convert to fraction form
    111,815.80/167,594.10 = 45,212.20/x
  3. Step 3: Cross multiply
    111,815.80x = 167,594.10 × 45,212.20
  4. Step 4: Simplify right side
    111,815.80x = 7,577,297,968.02
  5. Step 5: Solve for x
    x = 7,577,297,968.02/111,815.80
  6. Step 6: Final answer
    x = 67,765.90

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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.