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Finding the Fourth Proportional to 118,487.10, 163,403.82 and 92,649

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Solution

The fourth proportional to 118,487.10, 163,403.82 and 92,649 is: 127,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,487.10 : 163,403.82 = 92,649 : x
  2. Step 2: Convert to fraction form
    118,487.10/163,403.82 = 92,649/x
  3. Step 3: Cross multiply
    118,487.10x = 163,403.82 × 92,649
  4. Step 4: Simplify right side
    118,487.10x = 15,139,200,519.18
  5. Step 5: Solve for x
    x = 15,139,200,519.18/118,487.10
  6. Step 6: Final answer
    x = 127,770.88

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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.