Home / 107,830.20-161,745.30-106,080.60

Finding the Fourth Proportional to 107,830.20, 161,745.30 and 106,080.60

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Solution

The fourth proportional to 107,830.20, 161,745.30 and 106,080.60 is: 159,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,830.20 : 161,745.30 = 106,080.60 : x
  2. Step 2: Convert to fraction form
    107,830.20/161,745.30 = 106,080.60/x
  3. Step 3: Cross multiply
    107,830.20x = 161,745.30 × 106,080.60
  4. Step 4: Simplify right side
    107,830.20x = 17,158,038,471.18
  5. Step 5: Solve for x
    x = 17,158,038,471.18/107,830.20
  6. Step 6: Final answer
    x = 159,120.90

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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.