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Finding the Fourth Proportional to 122,320.56, 168,644.52 and 82,040.88

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Solution

The fourth proportional to 122,320.56, 168,644.52 and 82,040.88 is: 113,110.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,320.56 : 168,644.52 = 82,040.88 : x
  2. Step 2: Convert to fraction form
    122,320.56/168,644.52 = 82,040.88/x
  3. Step 3: Cross multiply
    122,320.56x = 168,644.52 × 82,040.88
  4. Step 4: Simplify right side
    122,320.56x = 13,835,744,827.98
  5. Step 5: Solve for x
    x = 13,835,744,827.98/122,320.56
  6. Step 6: Final answer
    x = 113,110.54

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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.