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Finding the Fourth Proportional to 201,119.20, 301,848.90 and 82,875.40

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Solution

The fourth proportional to 201,119.20, 301,848.90 and 82,875.40 is: 124,383.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,119.20 : 301,848.90 = 82,875.40 : x
  2. Step 2: Convert to fraction form
    201,119.20/301,848.90 = 82,875.40/x
  3. Step 3: Cross multiply
    201,119.20x = 301,848.90 × 82,875.40
  4. Step 4: Simplify right side
    201,119.20x = 25,015,848,327.06
  5. Step 5: Solve for x
    x = 25,015,848,327.06/201,119.20
  6. Step 6: Final answer
    x = 124,383.19

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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.