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Finding the Fourth Proportional to 111,773.36, 154,311 and 74,098.64

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Solution

The fourth proportional to 111,773.36, 154,311 and 74,098.64 is: 102,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,773.36 : 154,311 = 74,098.64 : x
  2. Step 2: Convert to fraction form
    111,773.36/154,311 = 74,098.64/x
  3. Step 3: Cross multiply
    111,773.36x = 154,311 × 74,098.64
  4. Step 4: Simplify right side
    111,773.36x = 11,434,235,237.04
  5. Step 5: Solve for x
    x = 11,434,235,237.04/111,773.36
  6. Step 6: Final answer
    x = 102,298.39

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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.