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Finding the Fourth Proportional to 138,846.03, 191,607.20 and 75,183.83

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Solution

The fourth proportional to 138,846.03, 191,607.20 and 75,183.83 is: 103,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,846.03 : 191,607.20 = 75,183.83 : x
  2. Step 2: Convert to fraction form
    138,846.03/191,607.20 = 75,183.83/x
  3. Step 3: Cross multiply
    138,846.03x = 191,607.20 × 75,183.83
  4. Step 4: Simplify right side
    138,846.03x = 14,405,762,606.63
  5. Step 5: Solve for x
    x = 14,405,762,606.63/138,846.03
  6. Step 6: Final answer
    x = 103,753.51

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Why These Related Problems?

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