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Finding the Fourth Proportional to 201,902.33, 278,627.09 and 111,261.54

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Solution

The fourth proportional to 201,902.33, 278,627.09 and 111,261.54 is: 153,541.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,902.33 : 278,627.09 = 111,261.54 : x
  2. Step 2: Convert to fraction form
    201,902.33/278,627.09 = 111,261.54/x
  3. Step 3: Cross multiply
    201,902.33x = 278,627.09 × 111,261.54
  4. Step 4: Simplify right side
    201,902.33x = 31,000,478,562.81
  5. Step 5: Solve for x
    x = 31,000,478,562.81/201,902.33
  6. Step 6: Final answer
    x = 153,541.95

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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.