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Finding the Fourth Proportional to 122,370.64, 168,894.60 and 79,965.52

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Solution

The fourth proportional to 122,370.64, 168,894.60 and 79,965.52 is: 110,367.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,370.64 : 168,894.60 = 79,965.52 : x
  2. Step 2: Convert to fraction form
    122,370.64/168,894.60 = 79,965.52/x
  3. Step 3: Cross multiply
    122,370.64x = 168,894.60 × 79,965.52
  4. Step 4: Simplify right side
    122,370.64x = 13,505,744,514.19
  5. Step 5: Solve for x
    x = 13,505,744,514.19/122,370.64
  6. Step 6: Final answer
    x = 110,367.52

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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.