Home / 139,809.96-192,938.04-76,147.56

Finding the Fourth Proportional to 139,809.96, 192,938.04 and 76,147.56

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Solution

The fourth proportional to 139,809.96, 192,938.04 and 76,147.56 is: 105,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,809.96 : 192,938.04 = 76,147.56 : x
  2. Step 2: Convert to fraction form
    139,809.96/192,938.04 = 76,147.56/x
  3. Step 3: Cross multiply
    139,809.96x = 192,938.04 × 76,147.56
  4. Step 4: Simplify right side
    139,809.96x = 14,691,760,977.18
  5. Step 5: Solve for x
    x = 14,691,760,977.18/139,809.96
  6. Step 6: Final answer
    x = 105,083.79

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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.