Home / 107,121.69-160,799.31-78,954.48

Finding the Fourth Proportional to 107,121.69, 160,799.31 and 78,954.48

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Solution

The fourth proportional to 107,121.69, 160,799.31 and 78,954.48 is: 118,517.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,121.69 : 160,799.31 = 78,954.48 : x
  2. Step 2: Convert to fraction form
    107,121.69/160,799.31 = 78,954.48/x
  3. Step 3: Cross multiply
    107,121.69x = 160,799.31 × 78,954.48
  4. Step 4: Simplify right side
    107,121.69x = 12,695,825,905.41
  5. Step 5: Solve for x
    x = 12,695,825,905.41/107,121.69
  6. Step 6: Final answer
    x = 118,517.79

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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.