Home / 143,435.25-197,940.65-79,771.68

Finding the Fourth Proportional to 143,435.25, 197,940.65 and 79,771.68

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Solution

The fourth proportional to 143,435.25, 197,940.65 and 79,771.68 is: 110,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.25 : 197,940.65 = 79,771.68 : x
  2. Step 2: Convert to fraction form
    143,435.25/197,940.65 = 79,771.68/x
  3. Step 3: Cross multiply
    143,435.25x = 197,940.65 × 79,771.68
  4. Step 4: Simplify right side
    143,435.25x = 15,790,057,791.93
  5. Step 5: Solve for x
    x = 15,790,057,791.93/143,435.25
  6. Step 6: Final answer
    x = 110,084.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.