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Finding the Fourth Proportional to 199,586.53, 275,490.47 and 123,129.42

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Solution

The fourth proportional to 199,586.53, 275,490.47 and 123,129.42 is: 169,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,586.53 : 275,490.47 = 123,129.42 : x
  2. Step 2: Convert to fraction form
    199,586.53/275,490.47 = 123,129.42/x
  3. Step 3: Cross multiply
    199,586.53x = 275,490.47 × 123,129.42
  4. Step 4: Simplify right side
    199,586.53x = 33,920,981,786.63
  5. Step 5: Solve for x
    x = 33,920,981,786.63/199,586.53
  6. Step 6: Final answer
    x = 169,956.27

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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.