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Finding the Fourth Proportional to 111,950.64, 154,441.94 and 75,640.37

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Solution

The fourth proportional to 111,950.64, 154,441.94 and 75,640.37 is: 104,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,950.64 : 154,441.94 = 75,640.37 : x
  2. Step 2: Convert to fraction form
    111,950.64/154,441.94 = 75,640.37/x
  3. Step 3: Cross multiply
    111,950.64x = 154,441.94 × 75,640.37
  4. Step 4: Simplify right side
    111,950.64x = 11,682,044,334.71
  5. Step 5: Solve for x
    x = 11,682,044,334.71/111,950.64
  6. Step 6: Final answer
    x = 104,349.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.