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Finding the Fourth Proportional to 172,665.08, 238,412.94 and 135,046.52

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Solution

The fourth proportional to 172,665.08, 238,412.94 and 135,046.52 is: 186,469.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,665.08 : 238,412.94 = 135,046.52 : x
  2. Step 2: Convert to fraction form
    172,665.08/238,412.94 = 135,046.52/x
  3. Step 3: Cross multiply
    172,665.08x = 238,412.94 × 135,046.52
  4. Step 4: Simplify right side
    172,665.08x = 32,196,837,869.97
  5. Step 5: Solve for x
    x = 32,196,837,869.97/172,665.08
  6. Step 6: Final answer
    x = 186,469.89

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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.