Home / 123,163.05-169,964.89-66,574.43

Finding the Fourth Proportional to 123,163.05, 169,964.89 and 66,574.43

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Solution

The fourth proportional to 123,163.05, 169,964.89 and 66,574.43 is: 91,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,163.05 : 169,964.89 = 66,574.43 : x
  2. Step 2: Convert to fraction form
    123,163.05/169,964.89 = 66,574.43/x
  3. Step 3: Cross multiply
    123,163.05x = 169,964.89 × 66,574.43
  4. Step 4: Simplify right side
    123,163.05x = 11,315,315,671.76
  5. Step 5: Solve for x
    x = 11,315,315,671.76/123,163.05
  6. Step 6: Final answer
    x = 91,872.65

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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.