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Finding the Fourth Proportional to 172,950.78, 238,635.62 and 105,003.48

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Solution

The fourth proportional to 172,950.78, 238,635.62 and 105,003.48 is: 144,882.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,950.78 : 238,635.62 = 105,003.48 : x
  2. Step 2: Convert to fraction form
    172,950.78/238,635.62 = 105,003.48/x
  3. Step 3: Cross multiply
    172,950.78x = 238,635.62 × 105,003.48
  4. Step 4: Simplify right side
    172,950.78x = 25,057,571,906.23
  5. Step 5: Solve for x
    x = 25,057,571,906.23/172,950.78
  6. Step 6: Final answer
    x = 144,882.67

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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.