Home / 122,313.98-168,721.62-76,919.96

Finding the Fourth Proportional to 122,313.98, 168,721.62 and 76,919.96

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Solution

The fourth proportional to 122,313.98, 168,721.62 and 76,919.96 is: 106,104.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,313.98 : 168,721.62 = 76,919.96 : x
  2. Step 2: Convert to fraction form
    122,313.98/168,721.62 = 76,919.96/x
  3. Step 3: Cross multiply
    122,313.98x = 168,721.62 × 76,919.96
  4. Step 4: Simplify right side
    122,313.98x = 12,978,060,394.89
  5. Step 5: Solve for x
    x = 12,978,060,394.89/122,313.98
  6. Step 6: Final answer
    x = 106,104.47

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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.