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Finding the Fourth Proportional to 135,721.64, 203,450.08 and 64,625.17

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Solution

The fourth proportional to 135,721.64, 203,450.08 and 64,625.17 is: 96,874.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,721.64 : 203,450.08 = 64,625.17 : x
  2. Step 2: Convert to fraction form
    135,721.64/203,450.08 = 64,625.17/x
  3. Step 3: Cross multiply
    135,721.64x = 203,450.08 × 64,625.17
  4. Step 4: Simplify right side
    135,721.64x = 13,147,996,006.51
  5. Step 5: Solve for x
    x = 13,147,996,006.51/135,721.64
  6. Step 6: Final answer
    x = 96,874.72

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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.