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Finding the Fourth Proportional to 201,455.96, 277,958.93 and 129,749.69

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Solution

The fourth proportional to 201,455.96, 277,958.93 and 129,749.69 is: 179,022.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,455.96 : 277,958.93 = 129,749.69 : x
  2. Step 2: Convert to fraction form
    201,455.96/277,958.93 = 129,749.69/x
  3. Step 3: Cross multiply
    201,455.96x = 277,958.93 × 129,749.69
  4. Step 4: Simplify right side
    201,455.96x = 36,065,085,046.38
  5. Step 5: Solve for x
    x = 36,065,085,046.38/201,455.96
  6. Step 6: Final answer
    x = 179,022.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.