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Finding the Fourth Proportional to 172,906.65, 238,606.43 and 96,428.07

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Solution

The fourth proportional to 172,906.65, 238,606.43 and 96,428.07 is: 133,068.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,906.65 : 238,606.43 = 96,428.07 : x
  2. Step 2: Convert to fraction form
    172,906.65/238,606.43 = 96,428.07/x
  3. Step 3: Cross multiply
    172,906.65x = 238,606.43 × 96,428.07
  4. Step 4: Simplify right side
    172,906.65x = 23,008,357,052.35
  5. Step 5: Solve for x
    x = 23,008,357,052.35/172,906.65
  6. Step 6: Final answer
    x = 133,068.09

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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.