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Finding the Fourth Proportional to 122,458.57, 168,992.74 and 68,743.69

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Solution

The fourth proportional to 122,458.57, 168,992.74 and 68,743.69 is: 94,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,458.57 : 168,992.74 = 68,743.69 : x
  2. Step 2: Convert to fraction form
    122,458.57/168,992.74 = 68,743.69/x
  3. Step 3: Cross multiply
    122,458.57x = 168,992.74 × 68,743.69
  4. Step 4: Simplify right side
    122,458.57x = 11,617,184,530.81
  5. Step 5: Solve for x
    x = 11,617,184,530.81/122,458.57
  6. Step 6: Final answer
    x = 94,866.24

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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.