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Finding the Fourth Proportional to 159,685.83, 239,487.87 and 47,339.79

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Solution

The fourth proportional to 159,685.83, 239,487.87 and 47,339.79 is: 70,997.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,685.83 : 239,487.87 = 47,339.79 : x
  2. Step 2: Convert to fraction form
    159,685.83/239,487.87 = 47,339.79/x
  3. Step 3: Cross multiply
    159,685.83x = 239,487.87 × 47,339.79
  4. Step 4: Simplify right side
    159,685.83x = 11,337,305,473.35
  5. Step 5: Solve for x
    x = 11,337,305,473.35/159,685.83
  6. Step 6: Final answer
    x = 70,997.57

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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.