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Finding the Fourth Proportional to 122,788.80, 184,183.20 and 70,203.60

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Solution

The fourth proportional to 122,788.80, 184,183.20 and 70,203.60 is: 105,305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,788.80 : 184,183.20 = 70,203.60 : x
  2. Step 2: Convert to fraction form
    122,788.80/184,183.20 = 70,203.60/x
  3. Step 3: Cross multiply
    122,788.80x = 184,183.20 × 70,203.60
  4. Step 4: Simplify right side
    122,788.80x = 12,930,323,699.52
  5. Step 5: Solve for x
    x = 12,930,323,699.52/122,788.80
  6. Step 6: Final answer
    x = 105,305.40

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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.