Home / 122,911.72-184,305.85-71,636.90

Finding the Fourth Proportional to 122,911.72, 184,305.85 and 71,636.90

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Solution

The fourth proportional to 122,911.72, 184,305.85 and 71,636.90 is: 107,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,911.72 : 184,305.85 = 71,636.90 : x
  2. Step 2: Convert to fraction form
    122,911.72/184,305.85 = 71,636.90/x
  3. Step 3: Cross multiply
    122,911.72x = 184,305.85 × 71,636.90
  4. Step 4: Simplify right side
    122,911.72x = 13,203,098,645.24
  5. Step 5: Solve for x
    x = 13,203,098,645.24/122,911.72
  6. Step 6: Final answer
    x = 107,419.37

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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.