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Finding the Fourth Proportional to 201,115, 301,799.56 and 112,426.68

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Solution

The fourth proportional to 201,115, 301,799.56 and 112,426.68 is: 168,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,115 : 301,799.56 = 112,426.68 : x
  2. Step 2: Convert to fraction form
    201,115/301,799.56 = 112,426.68/x
  3. Step 3: Cross multiply
    201,115x = 301,799.56 × 112,426.68
  4. Step 4: Simplify right side
    201,115x = 33,930,322,556.26
  5. Step 5: Solve for x
    x = 33,930,322,556.26/201,115
  6. Step 6: Final answer
    x = 168,711.05

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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.