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Finding the Fourth Proportional to 197,187.90, 295,441.65 and 91,790.70

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Solution

The fourth proportional to 197,187.90, 295,441.65 and 91,790.70 is: 137,527.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,187.90 : 295,441.65 = 91,790.70 : x
  2. Step 2: Convert to fraction form
    197,187.90/295,441.65 = 91,790.70/x
  3. Step 3: Cross multiply
    197,187.90x = 295,441.65 × 91,790.70
  4. Step 4: Simplify right side
    197,187.90x = 27,118,795,862.66
  5. Step 5: Solve for x
    x = 27,118,795,862.66/197,187.90
  6. Step 6: Final answer
    x = 137,527.69

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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.