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Finding the Fourth Proportional to 148,788.87, 205,278.67 and 84,249.28

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Solution

The fourth proportional to 148,788.87, 205,278.67 and 84,249.28 is: 116,235.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,788.87 : 205,278.67 = 84,249.28 : x
  2. Step 2: Convert to fraction form
    148,788.87/205,278.67 = 84,249.28/x
  3. Step 3: Cross multiply
    148,788.87x = 205,278.67 × 84,249.28
  4. Step 4: Simplify right side
    148,788.87x = 17,294,580,146.86
  5. Step 5: Solve for x
    x = 17,294,580,146.86/148,788.87
  6. Step 6: Final answer
    x = 116,235.71

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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.