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Finding the Fourth Proportional to 144,201.64, 199,009.85 and 79,676.50

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Solution

The fourth proportional to 144,201.64, 199,009.85 and 79,676.50 is: 109,959.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,201.64 : 199,009.85 = 79,676.50 : x
  2. Step 2: Convert to fraction form
    144,201.64/199,009.85 = 79,676.50/x
  3. Step 3: Cross multiply
    144,201.64x = 199,009.85 × 79,676.50
  4. Step 4: Simplify right side
    144,201.64x = 15,856,408,313.53
  5. Step 5: Solve for x
    x = 15,856,408,313.53/144,201.64
  6. Step 6: Final answer
    x = 109,959.97

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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.