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Finding the Fourth Proportional to 194,672.75, 268,648.80 and 105,248.75

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Solution

The fourth proportional to 194,672.75, 268,648.80 and 105,248.75 is: 145,243.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,672.75 : 268,648.80 = 105,248.75 : x
  2. Step 2: Convert to fraction form
    194,672.75/268,648.80 = 105,248.75/x
  3. Step 3: Cross multiply
    194,672.75x = 268,648.80 × 105,248.75
  4. Step 4: Simplify right side
    194,672.75x = 28,274,950,389
  5. Step 5: Solve for x
    x = 28,274,950,389/194,672.75
  6. Step 6: Final answer
    x = 145,243.49

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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.