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Finding the Fourth Proportional to 193,394.72, 266,880.48 and 107,348.64

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Solution

The fourth proportional to 193,394.72, 266,880.48 and 107,348.64 is: 148,138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,394.72 : 266,880.48 = 107,348.64 : x
  2. Step 2: Convert to fraction form
    193,394.72/266,880.48 = 107,348.64/x
  3. Step 3: Cross multiply
    193,394.72x = 266,880.48 × 107,348.64
  4. Step 4: Simplify right side
    193,394.72x = 28,649,256,570.55
  5. Step 5: Solve for x
    x = 28,649,256,570.55/193,394.72
  6. Step 6: Final answer
    x = 148,138.78

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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.