Home / 123,190.45-170,003.01-66,601.82

Finding the Fourth Proportional to 123,190.45, 170,003.01 and 66,601.82

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Solution

The fourth proportional to 123,190.45, 170,003.01 and 66,601.82 is: 91,910.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,190.45 : 170,003.01 = 66,601.82 : x
  2. Step 2: Convert to fraction form
    123,190.45/170,003.01 = 66,601.82/x
  3. Step 3: Cross multiply
    123,190.45x = 170,003.01 × 66,601.82
  4. Step 4: Simplify right side
    123,190.45x = 11,322,509,871.48
  5. Step 5: Solve for x
    x = 11,322,509,871.48/123,190.45
  6. Step 6: Final answer
    x = 91,910.62

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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.