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Finding the Fourth Proportional to 201,121.64, 277,540.26 and 111,703.40

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Solution

The fourth proportional to 201,121.64, 277,540.26 and 111,703.40 is: 154,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,121.64 : 277,540.26 = 111,703.40 : x
  2. Step 2: Convert to fraction form
    201,121.64/277,540.26 = 111,703.40/x
  3. Step 3: Cross multiply
    201,121.64x = 277,540.26 × 111,703.40
  4. Step 4: Simplify right side
    201,121.64x = 31,002,190,678.88
  5. Step 5: Solve for x
    x = 31,002,190,678.88/201,121.64
  6. Step 6: Final answer
    x = 154,146.47

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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.