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Finding the Fourth Proportional to 189,376.36, 283,793.82 and 139,061.68

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Solution

The fourth proportional to 189,376.36, 283,793.82 and 139,061.68 is: 208,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,376.36 : 283,793.82 = 139,061.68 : x
  2. Step 2: Convert to fraction form
    189,376.36/283,793.82 = 139,061.68/x
  3. Step 3: Cross multiply
    189,376.36x = 283,793.82 × 139,061.68
  4. Step 4: Simplify right side
    189,376.36x = 39,464,845,382.82
  5. Step 5: Solve for x
    x = 39,464,845,382.82/189,376.36
  6. Step 6: Final answer
    x = 208,393.73

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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.