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Finding the Fourth Proportional to 122,978,145.60, 184,467,218.40 and 50,170,728.60

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Solution

The fourth proportional to 122,978,145.60, 184,467,218.40 and 50,170,728.60 is: 75,256,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,978,145.60 : 184,467,218.40 = 50,170,728.60 : x
  2. Step 2: Convert to fraction form
    122,978,145.60/184,467,218.40 = 50,170,728.60/x
  3. Step 3: Cross multiply
    122,978,145.60x = 184,467,218.40 × 50,170,728.60
  4. Step 4: Simplify right side
    122,978,145.60x = 9,254,854,749,943,326
  5. Step 5: Solve for x
    x = 9,254,854,749,943,326/122,978,145.60
  6. Step 6: Final answer
    x = 75,256,092.90

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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.