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Finding the Fourth Proportional to 104,644.38, 144,789.54 and 91,243.54

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Solution

The fourth proportional to 104,644.38, 144,789.54 and 91,243.54 is: 126,247.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,644.38 : 144,789.54 = 91,243.54 : x
  2. Step 2: Convert to fraction form
    104,644.38/144,789.54 = 91,243.54/x
  3. Step 3: Cross multiply
    104,644.38x = 144,789.54 × 91,243.54
  4. Step 4: Simplify right side
    104,644.38x = 13,211,110,184.57
  5. Step 5: Solve for x
    x = 13,211,110,184.57/104,644.38
  6. Step 6: Final answer
    x = 126,247.68

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1.5x scale

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.