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Finding the Fourth Proportional to 111,321.90, 167,003.10 and 36,421.20

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Solution

The fourth proportional to 111,321.90, 167,003.10 and 36,421.20 is: 54,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,321.90 : 167,003.10 = 36,421.20 : x
  2. Step 2: Convert to fraction form
    111,321.90/167,003.10 = 36,421.20/x
  3. Step 3: Cross multiply
    111,321.90x = 167,003.10 × 36,421.20
  4. Step 4: Simplify right side
    111,321.90x = 6,082,453,305.72
  5. Step 5: Solve for x
    x = 6,082,453,305.72/111,321.90
  6. Step 6: Final answer
    x = 54,638.43

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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.