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Finding the Fourth Proportional to 122,693.43, 169,211.97 and 84,513.87

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Solution

The fourth proportional to 122,693.43, 169,211.97 and 84,513.87 is: 116,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,693.43 : 169,211.97 = 84,513.87 : x
  2. Step 2: Convert to fraction form
    122,693.43/169,211.97 = 84,513.87/x
  3. Step 3: Cross multiply
    122,693.43x = 169,211.97 × 84,513.87
  4. Step 4: Simplify right side
    122,693.43x = 14,300,758,435.02
  5. Step 5: Solve for x
    x = 14,300,758,435.02/122,693.43
  6. Step 6: Final answer
    x = 116,556.84

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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.