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Finding the Fourth Proportional to 125,413.89, 173,213.73 and 85,057.44

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Solution

The fourth proportional to 125,413.89, 173,213.73 and 85,057.44 is: 117,475.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,413.89 : 173,213.73 = 85,057.44 : x
  2. Step 2: Convert to fraction form
    125,413.89/173,213.73 = 85,057.44/x
  3. Step 3: Cross multiply
    125,413.89x = 173,213.73 × 85,057.44
  4. Step 4: Simplify right side
    125,413.89x = 14,733,116,446.65
  5. Step 5: Solve for x
    x = 14,733,116,446.65/125,413.89
  6. Step 6: Final answer
    x = 117,475.95

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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.