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Finding the Fourth Proportional to 111,973.25, 154,523.09 and 61,672.25

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Solution

The fourth proportional to 111,973.25, 154,523.09 and 61,672.25 is: 85,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,973.25 : 154,523.09 = 61,672.25 : x
  2. Step 2: Convert to fraction form
    111,973.25/154,523.09 = 61,672.25/x
  3. Step 3: Cross multiply
    111,973.25x = 154,523.09 × 61,672.25
  4. Step 4: Simplify right side
    111,973.25x = 9,529,787,177.74
  5. Step 5: Solve for x
    x = 9,529,787,177.74/111,973.25
  6. Step 6: Final answer
    x = 85,107.71

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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.