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Finding the Fourth Proportional to 123,060.36, 169,823.40 and 66,471.78

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Solution

The fourth proportional to 123,060.36, 169,823.40 and 66,471.78 is: 91,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,060.36 : 169,823.40 = 66,471.78 : x
  2. Step 2: Convert to fraction form
    123,060.36/169,823.40 = 66,471.78/x
  3. Step 3: Cross multiply
    123,060.36x = 169,823.40 × 66,471.78
  4. Step 4: Simplify right side
    123,060.36x = 11,288,463,683.65
  5. Step 5: Solve for x
    x = 11,288,463,683.65/123,060.36
  6. Step 6: Final answer
    x = 91,731.11

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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.