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Finding the Fourth Proportional to 104,745.45, 156,993.33 and 72,983.55

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Solution

The fourth proportional to 104,745.45, 156,993.33 and 72,983.55 is: 109,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,745.45 : 156,993.33 = 72,983.55 : x
  2. Step 2: Convert to fraction form
    104,745.45/156,993.33 = 72,983.55/x
  3. Step 3: Cross multiply
    104,745.45x = 156,993.33 × 72,983.55
  4. Step 4: Simplify right side
    104,745.45x = 11,457,930,549.72
  5. Step 5: Solve for x
    x = 11,457,930,549.72/104,745.45
  6. Step 6: Final answer
    x = 109,388.34

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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.