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Finding the Fourth Proportional to 133,127.37, 199,822.28 and 80,639.37

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Solution

The fourth proportional to 133,127.37, 199,822.28 and 80,639.37 is: 121,038.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,127.37 : 199,822.28 = 80,639.37 : x
  2. Step 2: Convert to fraction form
    133,127.37/199,822.28 = 80,639.37/x
  3. Step 3: Cross multiply
    133,127.37x = 199,822.28 × 80,639.37
  4. Step 4: Simplify right side
    133,127.37x = 16,113,542,367.97
  5. Step 5: Solve for x
    x = 16,113,542,367.97/133,127.37
  6. Step 6: Final answer
    x = 121,038.54

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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.