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Finding the Fourth Proportional to 122,392.89, 183,489.71 and 47,474.37

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Solution

The fourth proportional to 122,392.89, 183,489.71 and 47,474.37 is: 71,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,392.89 : 183,489.71 = 47,474.37 : x
  2. Step 2: Convert to fraction form
    122,392.89/183,489.71 = 47,474.37/x
  3. Step 3: Cross multiply
    122,392.89x = 183,489.71 × 47,474.37
  4. Step 4: Simplify right side
    122,392.89x = 8,711,058,146.36
  5. Step 5: Solve for x
    x = 8,711,058,146.36/122,392.89
  6. Step 6: Final answer
    x = 71,172.91

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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.