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Finding the Fourth Proportional to 123,174.94, 169,981.35 and 66,586.42

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Solution

The fourth proportional to 123,174.94, 169,981.35 and 66,586.42 is: 91,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,174.94 : 169,981.35 = 66,586.42 : x
  2. Step 2: Convert to fraction form
    123,174.94/169,981.35 = 66,586.42/x
  3. Step 3: Cross multiply
    123,174.94x = 169,981.35 × 66,586.42
  4. Step 4: Simplify right side
    123,174.94x = 11,318,449,563.27
  5. Step 5: Solve for x
    x = 11,318,449,563.27/123,174.94
  6. Step 6: Final answer
    x = 91,889.22

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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.