Home / 145,481.26-200,747.82-81,817.70

Finding the Fourth Proportional to 145,481.26, 200,747.82 and 81,817.70

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Solution

The fourth proportional to 145,481.26, 200,747.82 and 81,817.70 is: 112,899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,481.26 : 200,747.82 = 81,817.70 : x
  2. Step 2: Convert to fraction form
    145,481.26/200,747.82 = 81,817.70/x
  3. Step 3: Cross multiply
    145,481.26x = 200,747.82 × 81,817.70
  4. Step 4: Simplify right side
    145,481.26x = 16,424,724,912.41
  5. Step 5: Solve for x
    x = 16,424,724,912.41/145,481.26
  6. Step 6: Final answer
    x = 112,899.25

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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.