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Finding the Fourth Proportional to 198,676.29, 274,061.06 and 118,129.79

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Solution

The fourth proportional to 198,676.29, 274,061.06 and 118,129.79 is: 162,952.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,676.29 : 274,061.06 = 118,129.79 : x
  2. Step 2: Convert to fraction form
    198,676.29/274,061.06 = 118,129.79/x
  3. Step 3: Cross multiply
    198,676.29x = 274,061.06 × 118,129.79
  4. Step 4: Simplify right side
    198,676.29x = 32,374,776,445.45
  5. Step 5: Solve for x
    x = 32,374,776,445.45/198,676.29
  6. Step 6: Final answer
    x = 162,952.39

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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.