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Finding the Fourth Proportional to 123,163.56, 169,965.59 and 66,574.94

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Solution

The fourth proportional to 123,163.56, 169,965.59 and 66,574.94 is: 91,873.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,163.56 : 169,965.59 = 66,574.94 : x
  2. Step 2: Convert to fraction form
    123,163.56/169,965.59 = 66,574.94/x
  3. Step 3: Cross multiply
    123,163.56x = 169,965.59 × 66,574.94
  4. Step 4: Simplify right side
    123,163.56x = 11,315,447,773.61
  5. Step 5: Solve for x
    x = 11,315,447,773.61/123,163.56
  6. Step 6: Final answer
    x = 91,873.34

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1.5x scale

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.