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Finding the Fourth Proportional to 122,161.64, 183,235.43 and 72,556.82

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Solution

The fourth proportional to 122,161.64, 183,235.43 and 72,556.82 is: 108,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,161.64 : 183,235.43 = 72,556.82 : x
  2. Step 2: Convert to fraction form
    122,161.64/183,235.43 = 72,556.82/x
  3. Step 3: Cross multiply
    122,161.64x = 183,235.43 × 72,556.82
  4. Step 4: Simplify right side
    122,161.64x = 13,294,979,377.35
  5. Step 5: Solve for x
    x = 13,294,979,377.35/122,161.64
  6. Step 6: Final answer
    x = 108,831.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.