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Finding the Fourth Proportional to 172,486.78, 238,025.92 and 97,020.70

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Solution

The fourth proportional to 172,486.78, 238,025.92 and 97,020.70 is: 133,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,486.78 : 238,025.92 = 97,020.70 : x
  2. Step 2: Convert to fraction form
    172,486.78/238,025.92 = 97,020.70/x
  3. Step 3: Cross multiply
    172,486.78x = 238,025.92 × 97,020.70
  4. Step 4: Simplify right side
    172,486.78x = 23,093,441,376.54
  5. Step 5: Solve for x
    x = 23,093,441,376.54/172,486.78
  6. Step 6: Final answer
    x = 133,885.28

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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.