Home / 197,105.12-295,878.81-78,858.89

Finding the Fourth Proportional to 197,105.12, 295,878.81 and 78,858.89

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Solution

The fourth proportional to 197,105.12, 295,878.81 and 78,858.89 is: 118,376.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,105.12 : 295,878.81 = 78,858.89 : x
  2. Step 2: Convert to fraction form
    197,105.12/295,878.81 = 78,858.89/x
  3. Step 3: Cross multiply
    197,105.12x = 295,878.81 × 78,858.89
  4. Step 4: Simplify right side
    197,105.12x = 23,332,674,531.12
  5. Step 5: Solve for x
    x = 23,332,674,531.12/197,105.12
  6. Step 6: Final answer
    x = 118,376.81

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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.