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Finding the Fourth Proportional to 172,940.50, 238,661.54 and 97,489

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Solution

The fourth proportional to 172,940.50, 238,661.54 and 97,489 is: 134,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,940.50 : 238,661.54 = 97,489 : x
  2. Step 2: Convert to fraction form
    172,940.50/238,661.54 = 97,489/x
  3. Step 3: Cross multiply
    172,940.50x = 238,661.54 × 97,489
  4. Step 4: Simplify right side
    172,940.50x = 23,266,874,873.06
  5. Step 5: Solve for x
    x = 23,266,874,873.06/172,940.50
  6. Step 6: Final answer
    x = 134,536.88

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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.