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Finding the Fourth Proportional to 171,780.66, 236,902 and 107,255.73

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Solution

The fourth proportional to 171,780.66, 236,902 and 107,255.73 is: 147,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,780.66 : 236,902 = 107,255.73 : x
  2. Step 2: Convert to fraction form
    171,780.66/236,902 = 107,255.73/x
  3. Step 3: Cross multiply
    171,780.66x = 236,902 × 107,255.73
  4. Step 4: Simplify right side
    171,780.66x = 25,409,096,948.46
  5. Step 5: Solve for x
    x = 25,409,096,948.46/171,780.66
  6. Step 6: Final answer
    x = 147,915.94

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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.