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Finding the Fourth Proportional to 201,128.97, 301,732.35 and 76,460.25

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Solution

The fourth proportional to 201,128.97, 301,732.35 and 76,460.25 is: 114,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,128.97 : 301,732.35 = 76,460.25 : x
  2. Step 2: Convert to fraction form
    201,128.97/301,732.35 = 76,460.25/x
  3. Step 3: Cross multiply
    201,128.97x = 301,732.35 × 76,460.25
  4. Step 4: Simplify right side
    201,128.97x = 23,070,530,914.09
  5. Step 5: Solve for x
    x = 23,070,530,914.09/201,128.97
  6. Step 6: Final answer
    x = 114,705.16

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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.