Home / 103,404.09-155,183.33-76,811.48

Finding the Fourth Proportional to 103,404.09, 155,183.33 and 76,811.48

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Solution

The fourth proportional to 103,404.09, 155,183.33 and 76,811.48 is: 115,274.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,404.09 : 155,183.33 = 76,811.48 : x
  2. Step 2: Convert to fraction form
    103,404.09/155,183.33 = 76,811.48/x
  3. Step 3: Cross multiply
    103,404.09x = 155,183.33 × 76,811.48
  4. Step 4: Simplify right side
    103,404.09x = 11,919,861,248.63
  5. Step 5: Solve for x
    x = 11,919,861,248.63/103,404.09
  6. Step 6: Final answer
    x = 115,274.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.