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Finding the Fourth Proportional to 197,337.92, 272,320.80 and 107,912

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Solution

The fourth proportional to 197,337.92, 272,320.80 and 107,912 is: 148,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,337.92 : 272,320.80 = 107,912 : x
  2. Step 2: Convert to fraction form
    197,337.92/272,320.80 = 107,912/x
  3. Step 3: Cross multiply
    197,337.92x = 272,320.80 × 107,912
  4. Step 4: Simplify right side
    197,337.92x = 29,386,682,169.60
  5. Step 5: Solve for x
    x = 29,386,682,169.60/197,337.92
  6. Step 6: Final answer
    x = 148,915.54

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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.