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Finding the Fourth Proportional to 89,139.73, 122,941.97 and 75,755.29

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Solution

The fourth proportional to 89,139.73, 122,941.97 and 75,755.29 is: 104,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,139.73 : 122,941.97 = 75,755.29 : x
  2. Step 2: Convert to fraction form
    89,139.73/122,941.97 = 75,755.29/x
  3. Step 3: Cross multiply
    89,139.73x = 122,941.97 × 75,755.29
  4. Step 4: Simplify right side
    89,139.73x = 9,313,504,211.74
  5. Step 5: Solve for x
    x = 9,313,504,211.74/89,139.73
  6. Step 6: Final answer
    x = 104,482.08

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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.