Home / 103,780,467,555.70-155,419,313,963.45-71,819,581,568.75

Finding the Fourth Proportional to 103,780,467,555.70, 155,419,313,963.45 and 71,819,581,568.75

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Solution

The fourth proportional to 103,780,467,555.70, 155,419,313,963.45 and 71,819,581,568.75 is: 107,555,403,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780,467,555.70 : 155,419,313,963.45 = 71,819,581,568.75 : x
  2. Step 2: Convert to fraction form
    103,780,467,555.70/155,419,313,963.45 = 71,819,581,568.75/x
  3. Step 3: Cross multiply
    103,780,467,555.70x = 155,419,313,963.45 × 71,819,581,568.75
  4. Step 4: Simplify right side
    103,780,467,555.70x = 11,162,150,096,557,163,151,360
  5. Step 5: Solve for x
    x = 11,162,150,096,557,163,151,360/103,780,467,555.70
  6. Step 6: Final answer
    x = 107,555,403,819.76

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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.