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Finding the Fourth Proportional to 158,466.89, 218,679.36 and 86,845.61

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Solution

The fourth proportional to 158,466.89, 218,679.36 and 86,845.61 is: 119,844.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,466.89 : 218,679.36 = 86,845.61 : x
  2. Step 2: Convert to fraction form
    158,466.89/218,679.36 = 86,845.61/x
  3. Step 3: Cross multiply
    158,466.89x = 218,679.36 × 86,845.61
  4. Step 4: Simplify right side
    158,466.89x = 18,991,342,413.61
  5. Step 5: Solve for x
    x = 18,991,342,413.61/158,466.89
  6. Step 6: Final answer
    x = 119,844.23

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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.