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Finding the Fourth Proportional to 122,321.16, 168,777.54 and 79,941.96

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Solution

The fourth proportional to 122,321.16, 168,777.54 and 79,941.96 is: 110,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,321.16 : 168,777.54 = 79,941.96 : x
  2. Step 2: Convert to fraction form
    122,321.16/168,777.54 = 79,941.96/x
  3. Step 3: Cross multiply
    122,321.16x = 168,777.54 × 79,941.96
  4. Step 4: Simplify right side
    122,321.16x = 13,492,407,351.58
  5. Step 5: Solve for x
    x = 13,492,407,351.58/122,321.16
  6. Step 6: Final answer
    x = 110,303.13

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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.