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Finding the Fourth Proportional to 123,163.21, 169,950.78 and 69,445.02

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Solution

The fourth proportional to 123,163.21, 169,950.78 and 69,445.02 is: 95,825.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,163.21 : 169,950.78 = 69,445.02 : x
  2. Step 2: Convert to fraction form
    123,163.21/169,950.78 = 69,445.02/x
  3. Step 3: Cross multiply
    123,163.21x = 169,950.78 × 69,445.02
  4. Step 4: Simplify right side
    123,163.21x = 11,802,235,316.12
  5. Step 5: Solve for x
    x = 11,802,235,316.12/123,163.21
  6. Step 6: Final answer
    x = 95,825.98

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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.