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Finding the Fourth Proportional to 143,676.79, 198,274.33 and 80,014.43

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Solution

The fourth proportional to 143,676.79, 198,274.33 and 80,014.43 is: 110,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,676.79 : 198,274.33 = 80,014.43 : x
  2. Step 2: Convert to fraction form
    143,676.79/198,274.33 = 80,014.43/x
  3. Step 3: Cross multiply
    143,676.79x = 198,274.33 × 80,014.43
  4. Step 4: Simplify right side
    143,676.79x = 15,864,808,094.29
  5. Step 5: Solve for x
    x = 15,864,808,094.29/143,676.79
  6. Step 6: Final answer
    x = 110,420.12

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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.