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Finding the Fourth Proportional to 111,473.57, 167,111.91 and 85,295.18

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Solution

The fourth proportional to 111,473.57, 167,111.91 and 85,295.18 is: 127,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,473.57 : 167,111.91 = 85,295.18 : x
  2. Step 2: Convert to fraction form
    111,473.57/167,111.91 = 85,295.18/x
  3. Step 3: Cross multiply
    111,473.57x = 167,111.91 × 85,295.18
  4. Step 4: Simplify right side
    111,473.57x = 14,253,839,608.03
  5. Step 5: Solve for x
    x = 14,253,839,608.03/111,473.57
  6. Step 6: Final answer
    x = 127,867.44

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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.