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Finding the Fourth Proportional to 101,893.70, 152,840.09 and 86,759.88

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Solution

The fourth proportional to 101,893.70, 152,840.09 and 86,759.88 is: 130,139.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,893.70 : 152,840.09 = 86,759.88 : x
  2. Step 2: Convert to fraction form
    101,893.70/152,840.09 = 86,759.88/x
  3. Step 3: Cross multiply
    101,893.70x = 152,840.09 × 86,759.88
  4. Step 4: Simplify right side
    101,893.70x = 13,260,388,556.91
  5. Step 5: Solve for x
    x = 13,260,388,556.91/101,893.70
  6. Step 6: Final answer
    x = 130,139.44

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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.