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Finding the Fourth Proportional to 172,273.30, 258,304.11 and 66,969.52

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Solution

The fourth proportional to 172,273.30, 258,304.11 and 66,969.52 is: 100,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,273.30 : 258,304.11 = 66,969.52 : x
  2. Step 2: Convert to fraction form
    172,273.30/258,304.11 = 66,969.52/x
  3. Step 3: Cross multiply
    172,273.30x = 258,304.11 × 66,969.52
  4. Step 4: Simplify right side
    172,273.30x = 17,298,502,260.73
  5. Step 5: Solve for x
    x = 17,298,502,260.73/172,273.30
  6. Step 6: Final answer
    x = 100,413.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.