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Finding the Fourth Proportional to 128,076.36, 192,114.54 and 43,837.62

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Solution

The fourth proportional to 128,076.36, 192,114.54 and 43,837.62 is: 65,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,076.36 : 192,114.54 = 43,837.62 : x
  2. Step 2: Convert to fraction form
    128,076.36/192,114.54 = 43,837.62/x
  3. Step 3: Cross multiply
    128,076.36x = 192,114.54 × 43,837.62
  4. Step 4: Simplify right side
    128,076.36x = 8,421,844,200.99
  5. Step 5: Solve for x
    x = 8,421,844,200.99/128,076.36
  6. Step 6: Final answer
    x = 65,756.43

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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.