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Finding the Fourth Proportional to 132,893.56, 183,396.81 and 81,219.03

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Solution

The fourth proportional to 132,893.56, 183,396.81 and 81,219.03 is: 112,084.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,893.56 : 183,396.81 = 81,219.03 : x
  2. Step 2: Convert to fraction form
    132,893.56/183,396.81 = 81,219.03/x
  3. Step 3: Cross multiply
    132,893.56x = 183,396.81 × 81,219.03
  4. Step 4: Simplify right side
    132,893.56x = 14,895,311,013.29
  5. Step 5: Solve for x
    x = 14,895,311,013.29/132,893.56
  6. Step 6: Final answer
    x = 112,084.52

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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.