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Finding the Fourth Proportional to 139,695.44, 209,546.42 and 39,864.56

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Solution

The fourth proportional to 139,695.44, 209,546.42 and 39,864.56 is: 59,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,695.44 : 209,546.42 = 39,864.56 : x
  2. Step 2: Convert to fraction form
    139,695.44/209,546.42 = 39,864.56/x
  3. Step 3: Cross multiply
    139,695.44x = 209,546.42 × 39,864.56
  4. Step 4: Simplify right side
    139,695.44x = 8,353,475,832.88
  5. Step 5: Solve for x
    x = 8,353,475,832.88/139,695.44
  6. Step 6: Final answer
    x = 59,797.77

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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.