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Finding the Fourth Proportional to 239,153, 330,046.12 and 131,723

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Solution

The fourth proportional to 239,153, 330,046.12 and 131,723 is: 181,785.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,153 : 330,046.12 = 131,723 : x
  2. Step 2: Convert to fraction form
    239,153/330,046.12 = 131,723/x
  3. Step 3: Cross multiply
    239,153x = 330,046.12 × 131,723
  4. Step 4: Simplify right side
    239,153x = 43,474,665,064.76
  5. Step 5: Solve for x
    x = 43,474,665,064.76/239,153
  6. Step 6: Final answer
    x = 181,785.99

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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.