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Finding the Fourth Proportional to 111,814.58, 167,721.84 and 76,647.62

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Solution

The fourth proportional to 111,814.58, 167,721.84 and 76,647.62 is: 114,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,814.58 : 167,721.84 = 76,647.62 : x
  2. Step 2: Convert to fraction form
    111,814.58/167,721.84 = 76,647.62/x
  3. Step 3: Cross multiply
    111,814.58x = 167,721.84 × 76,647.62
  4. Step 4: Simplify right side
    111,814.58x = 12,855,479,858.02
  5. Step 5: Solve for x
    x = 12,855,479,858.02/111,814.58
  6. Step 6: Final answer
    x = 114,971.41

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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.