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Finding the Fourth Proportional to 139,659.72, 192,728.54 and 75,997.37

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Solution

The fourth proportional to 139,659.72, 192,728.54 and 75,997.37 is: 104,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,659.72 : 192,728.54 = 75,997.37 : x
  2. Step 2: Convert to fraction form
    139,659.72/192,728.54 = 75,997.37/x
  3. Step 3: Cross multiply
    139,659.72x = 192,728.54 × 75,997.37
  4. Step 4: Simplify right side
    139,659.72x = 14,646,860,820.31
  5. Step 5: Solve for x
    x = 14,646,860,820.31/139,659.72
  6. Step 6: Final answer
    x = 104,875.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.