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Finding the Fourth Proportional to 172,275.36, 258,413.03 and 53,955.96

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Solution

The fourth proportional to 172,275.36, 258,413.03 and 53,955.96 is: 80,933.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,275.36 : 258,413.03 = 53,955.96 : x
  2. Step 2: Convert to fraction form
    172,275.36/258,413.03 = 53,955.96/x
  3. Step 3: Cross multiply
    172,275.36x = 258,413.03 × 53,955.96
  4. Step 4: Simplify right side
    172,275.36x = 13,942,923,110.16
  5. Step 5: Solve for x
    x = 13,942,923,110.16/172,275.36
  6. Step 6: Final answer
    x = 80,933.94

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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.