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Finding the Fourth Proportional to 123,134.85, 169,923.83 and 69,419.93

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Solution

The fourth proportional to 123,134.85, 169,923.83 and 69,419.93 is: 95,798.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,134.85 : 169,923.83 = 69,419.93 : x
  2. Step 2: Convert to fraction form
    123,134.85/169,923.83 = 69,419.93/x
  3. Step 3: Cross multiply
    123,134.85x = 169,923.83 × 69,419.93
  4. Step 4: Simplify right side
    123,134.85x = 11,796,099,187.21
  5. Step 5: Solve for x
    x = 11,796,099,187.21/123,134.85
  6. Step 6: Final answer
    x = 95,798.22

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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.