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Finding the Fourth Proportional to 111,333.50, 166,628.40 and 66,208.40

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Solution

The fourth proportional to 111,333.50, 166,628.40 and 66,208.40 is: 99,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,333.50 : 166,628.40 = 66,208.40 : x
  2. Step 2: Convert to fraction form
    111,333.50/166,628.40 = 66,208.40/x
  3. Step 3: Cross multiply
    111,333.50x = 166,628.40 × 66,208.40
  4. Step 4: Simplify right side
    111,333.50x = 11,032,199,758.56
  5. Step 5: Solve for x
    x = 11,032,199,758.56/111,333.50
  6. Step 6: Final answer
    x = 99,091.47

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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.