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Finding the Fourth Proportional to 117,478.89, 162,121.05 and 67,177.89

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Solution

The fourth proportional to 117,478.89, 162,121.05 and 67,177.89 is: 92,705.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.89 : 162,121.05 = 67,177.89 : x
  2. Step 2: Convert to fraction form
    117,478.89/162,121.05 = 67,177.89/x
  3. Step 3: Cross multiply
    117,478.89x = 162,121.05 × 67,177.89
  4. Step 4: Simplify right side
    117,478.89x = 10,890,950,063.58
  5. Step 5: Solve for x
    x = 10,890,950,063.58/117,478.89
  6. Step 6: Final answer
    x = 92,705.59

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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.