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Finding the Fourth Proportional to 122,812.40, 184,218.60 and 43,929.20

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Solution

The fourth proportional to 122,812.40, 184,218.60 and 43,929.20 is: 65,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,812.40 : 184,218.60 = 43,929.20 : x
  2. Step 2: Convert to fraction form
    122,812.40/184,218.60 = 43,929.20/x
  3. Step 3: Cross multiply
    122,812.40x = 184,218.60 × 43,929.20
  4. Step 4: Simplify right side
    122,812.40x = 8,092,575,723.12
  5. Step 5: Solve for x
    x = 8,092,575,723.12/122,812.40
  6. Step 6: Final answer
    x = 65,893.80

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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.