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Finding the Fourth Proportional to 172,388,961.60, 258,709,413.60 and 121,370,625.60

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Solution

The fourth proportional to 172,388,961.60, 258,709,413.60 and 121,370,625.60 is: 182,144,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,388,961.60 : 258,709,413.60 = 121,370,625.60 : x
  2. Step 2: Convert to fraction form
    172,388,961.60/258,709,413.60 = 121,370,625.60/x
  3. Step 3: Cross multiply
    172,388,961.60x = 258,709,413.60 × 121,370,625.60
  4. Step 4: Simplify right side
    172,388,961.60x = 31,399,723,377,241,144
  5. Step 5: Solve for x
    x = 31,399,723,377,241,144/172,388,961.60
  6. Step 6: Final answer
    x = 182,144,628.55

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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.