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Finding the Fourth Proportional to 197,419, 272,444.72 and 107,995

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Solution

The fourth proportional to 197,419, 272,444.72 and 107,995 is: 149,036.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,419 : 272,444.72 = 107,995 : x
  2. Step 2: Convert to fraction form
    197,419/272,444.72 = 107,995/x
  3. Step 3: Cross multiply
    197,419x = 272,444.72 × 107,995
  4. Step 4: Simplify right side
    197,419x = 29,422,667,536.40
  5. Step 5: Solve for x
    x = 29,422,667,536.40/197,419
  6. Step 6: Final answer
    x = 149,036.66

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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.