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Finding the Fourth Proportional to 189,349.83, 283,754.07 and 139,035.15

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Solution

The fourth proportional to 189,349.83, 283,754.07 and 139,035.15 is: 208,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,349.83 : 283,754.07 = 139,035.15 : x
  2. Step 2: Convert to fraction form
    189,349.83/283,754.07 = 139,035.15/x
  3. Step 3: Cross multiply
    189,349.83x = 283,754.07 × 139,035.15
  4. Step 4: Simplify right side
    189,349.83x = 39,451,789,685.56
  5. Step 5: Solve for x
    x = 39,451,789,685.56/189,349.83
  6. Step 6: Final answer
    x = 208,353.97

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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.