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Finding the Fourth Proportional to 111,509.44, 167,257.92 and 81,554.40

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Solution

The fourth proportional to 111,509.44, 167,257.92 and 81,554.40 is: 122,327.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,509.44 : 167,257.92 = 81,554.40 : x
  2. Step 2: Convert to fraction form
    111,509.44/167,257.92 = 81,554.40/x
  3. Step 3: Cross multiply
    111,509.44x = 167,257.92 × 81,554.40
  4. Step 4: Simplify right side
    111,509.44x = 13,640,619,310.85
  5. Step 5: Solve for x
    x = 13,640,619,310.85/111,509.44
  6. Step 6: Final answer
    x = 122,327.04

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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.