Home / 197,090.40-295,635.60-72,415.20

Finding the Fourth Proportional to 197,090.40, 295,635.60 and 72,415.20

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Solution

The fourth proportional to 197,090.40, 295,635.60 and 72,415.20 is: 108,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,090.40 : 295,635.60 = 72,415.20 : x
  2. Step 2: Convert to fraction form
    197,090.40/295,635.60 = 72,415.20/x
  3. Step 3: Cross multiply
    197,090.40x = 295,635.60 × 72,415.20
  4. Step 4: Simplify right side
    197,090.40x = 21,408,511,101.12
  5. Step 5: Solve for x
    x = 21,408,511,101.12/197,090.40
  6. Step 6: Final answer
    x = 108,622.80

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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.