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Finding the Fourth Proportional to 116,692.50, 161,036.46 and 66,391.50

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Solution

The fourth proportional to 116,692.50, 161,036.46 and 66,391.50 is: 91,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,692.50 : 161,036.46 = 66,391.50 : x
  2. Step 2: Convert to fraction form
    116,692.50/161,036.46 = 66,391.50/x
  3. Step 3: Cross multiply
    116,692.50x = 161,036.46 × 66,391.50
  4. Step 4: Simplify right side
    116,692.50x = 10,691,452,134.09
  5. Step 5: Solve for x
    x = 10,691,452,134.09/116,692.50
  6. Step 6: Final answer
    x = 91,620.73

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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.