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Finding the Fourth Proportional to 172,938, 238,654.44 and 93,450

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Solution

The fourth proportional to 172,938, 238,654.44 and 93,450 is: 128,961

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,938 : 238,654.44 = 93,450 : x
  2. Step 2: Convert to fraction form
    172,938/238,654.44 = 93,450/x
  3. Step 3: Cross multiply
    172,938x = 238,654.44 × 93,450
  4. Step 4: Simplify right side
    172,938x = 22,302,257,418
  5. Step 5: Solve for x
    x = 22,302,257,418/172,938
  6. Step 6: Final answer
    x = 128,961

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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.