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Finding the Fourth Proportional to 123,670.75, 170,665.65 and 69,954.61

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Solution

The fourth proportional to 123,670.75, 170,665.65 and 69,954.61 is: 96,537.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670.75 : 170,665.65 = 69,954.61 : x
  2. Step 2: Convert to fraction form
    123,670.75/170,665.65 = 69,954.61/x
  3. Step 3: Cross multiply
    123,670.75x = 170,665.65 × 69,954.61
  4. Step 4: Simplify right side
    123,670.75x = 11,938,848,986.15
  5. Step 5: Solve for x
    x = 11,938,848,986.15/123,670.75
  6. Step 6: Final answer
    x = 96,537.37

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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.