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Finding the Fourth Proportional to 172,872.75, 238,564.41 and 93,384.75

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Solution

The fourth proportional to 172,872.75, 238,564.41 and 93,384.75 is: 128,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,872.75 : 238,564.41 = 93,384.75 : x
  2. Step 2: Convert to fraction form
    172,872.75/238,564.41 = 93,384.75/x
  3. Step 3: Cross multiply
    172,872.75x = 238,564.41 × 93,384.75
  4. Step 4: Simplify right side
    172,872.75x = 22,278,277,786.75
  5. Step 5: Solve for x
    x = 22,278,277,786.75/172,872.75
  6. Step 6: Final answer
    x = 128,870.96

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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.