Home / 122,078.57-168,479.03-68,362.61

Finding the Fourth Proportional to 122,078.57, 168,479.03 and 68,362.61

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Solution

The fourth proportional to 122,078.57, 168,479.03 and 68,362.61 is: 94,346.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,078.57 : 168,479.03 = 68,362.61 : x
  2. Step 2: Convert to fraction form
    122,078.57/168,479.03 = 68,362.61/x
  3. Step 3: Cross multiply
    122,078.57x = 168,479.03 × 68,362.61
  4. Step 4: Simplify right side
    122,078.57x = 11,517,665,879.26
  5. Step 5: Solve for x
    x = 11,517,665,879.26/122,078.57
  6. Step 6: Final answer
    x = 94,346.34

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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.