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Finding the Fourth Proportional to 133,271.79, 199,878.21 and 38,481.40

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Solution

The fourth proportional to 133,271.79, 199,878.21 and 38,481.40 is: 57,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,271.79 : 199,878.21 = 38,481.40 : x
  2. Step 2: Convert to fraction form
    133,271.79/199,878.21 = 38,481.40/x
  3. Step 3: Cross multiply
    133,271.79x = 199,878.21 × 38,481.40
  4. Step 4: Simplify right side
    133,271.79x = 7,691,593,350.29
  5. Step 5: Solve for x
    x = 7,691,593,350.29/133,271.79
  6. Step 6: Final answer
    x = 57,713.59

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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.