Home / 106,441.39-159,772.80-78,393.11

Finding the Fourth Proportional to 106,441.39, 159,772.80 and 78,393.11

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Solution

The fourth proportional to 106,441.39, 159,772.80 and 78,393.11 is: 117,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,441.39 : 159,772.80 = 78,393.11 : x
  2. Step 2: Convert to fraction form
    106,441.39/159,772.80 = 78,393.11/x
  3. Step 3: Cross multiply
    106,441.39x = 159,772.80 × 78,393.11
  4. Step 4: Simplify right side
    106,441.39x = 12,525,086,293.44
  5. Step 5: Solve for x
    x = 12,525,086,293.44/106,441.39
  6. Step 6: Final answer
    x = 117,671.21

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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.