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Finding the Fourth Proportional to 140,088.79, 193,321.60 and 79,659.44

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Solution

The fourth proportional to 140,088.79, 193,321.60 and 79,659.44 is: 109,929.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,088.79 : 193,321.60 = 79,659.44 : x
  2. Step 2: Convert to fraction form
    140,088.79/193,321.60 = 79,659.44/x
  3. Step 3: Cross multiply
    140,088.79x = 193,321.60 × 79,659.44
  4. Step 4: Simplify right side
    140,088.79x = 15,399,889,230.15
  5. Step 5: Solve for x
    x = 15,399,889,230.15/140,088.79
  6. Step 6: Final answer
    x = 109,929.49

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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.