Home / 106,591.44-159,734.60-78,289.50

Finding the Fourth Proportional to 106,591.44, 159,734.60 and 78,289.50

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Solution

The fourth proportional to 106,591.44, 159,734.60 and 78,289.50 is: 117,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,591.44 : 159,734.60 = 78,289.50 : x
  2. Step 2: Convert to fraction form
    106,591.44/159,734.60 = 78,289.50/x
  3. Step 3: Cross multiply
    106,591.44x = 159,734.60 × 78,289.50
  4. Step 4: Simplify right side
    106,591.44x = 12,505,541,966.70
  5. Step 5: Solve for x
    x = 12,505,541,966.70/106,591.44
  6. Step 6: Final answer
    x = 117,322.20

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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.