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Finding the Fourth Proportional to 111,971.98, 167,956.80 and 45,396.28

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Solution

The fourth proportional to 111,971.98, 167,956.80 and 45,396.28 is: 68,093.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,971.98 : 167,956.80 = 45,396.28 : x
  2. Step 2: Convert to fraction form
    111,971.98/167,956.80 = 45,396.28/x
  3. Step 3: Cross multiply
    111,971.98x = 167,956.80 × 45,396.28
  4. Step 4: Simplify right side
    111,971.98x = 7,624,613,920.70
  5. Step 5: Solve for x
    x = 7,624,613,920.70/111,971.98
  6. Step 6: Final answer
    x = 68,093.95

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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.