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Finding the Fourth Proportional to 117,662.89, 162,314.99 and 76,850.93

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Solution

The fourth proportional to 117,662.89, 162,314.99 and 76,850.93 is: 106,015.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,662.89 : 162,314.99 = 76,850.93 : x
  2. Step 2: Convert to fraction form
    117,662.89/162,314.99 = 76,850.93/x
  3. Step 3: Cross multiply
    117,662.89x = 162,314.99 × 76,850.93
  4. Step 4: Simplify right side
    117,662.89x = 12,474,057,934.44
  5. Step 5: Solve for x
    x = 12,474,057,934.44/117,662.89
  6. Step 6: Final answer
    x = 106,015.23

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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.