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Finding the Fourth Proportional to 201,353.45, 301,841.55 and 68,140.45

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Solution

The fourth proportional to 201,353.45, 301,841.55 and 68,140.45 is: 102,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,353.45 : 301,841.55 = 68,140.45 : x
  2. Step 2: Convert to fraction form
    201,353.45/301,841.55 = 68,140.45/x
  3. Step 3: Cross multiply
    201,353.45x = 301,841.55 × 68,140.45
  4. Step 4: Simplify right side
    201,353.45x = 20,567,618,291.09
  5. Step 5: Solve for x
    x = 20,567,618,291.09/201,353.45
  6. Step 6: Final answer
    x = 102,146.84

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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.