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Finding the Fourth Proportional to 101,623.70, 152,380.56 and 80,698.37

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Solution

The fourth proportional to 101,623.70, 152,380.56 and 80,698.37 is: 121,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,623.70 : 152,380.56 = 80,698.37 : x
  2. Step 2: Convert to fraction form
    101,623.70/152,380.56 = 80,698.37/x
  3. Step 3: Cross multiply
    101,623.70x = 152,380.56 × 80,698.37
  4. Step 4: Simplify right side
    101,623.70x = 12,296,862,049.78
  5. Step 5: Solve for x
    x = 12,296,862,049.78/101,623.70
  6. Step 6: Final answer
    x = 121,003.89

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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.