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Finding the Fourth Proportional to 111,844.68, 154,349.30 and 64,107.03

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Solution

The fourth proportional to 111,844.68, 154,349.30 and 64,107.03 is: 88,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,844.68 : 154,349.30 = 64,107.03 : x
  2. Step 2: Convert to fraction form
    111,844.68/154,349.30 = 64,107.03/x
  3. Step 3: Cross multiply
    111,844.68x = 154,349.30 × 64,107.03
  4. Step 4: Simplify right side
    111,844.68x = 9,894,874,885.04
  5. Step 5: Solve for x
    x = 9,894,874,885.04/111,844.68
  6. Step 6: Final answer
    x = 88,469.79

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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.