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Finding the Fourth Proportional to 120,978.93, 166,941.39 and 67,260.66

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Solution

The fourth proportional to 120,978.93, 166,941.39 and 67,260.66 is: 92,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,978.93 : 166,941.39 = 67,260.66 : x
  2. Step 2: Convert to fraction form
    120,978.93/166,941.39 = 67,260.66/x
  3. Step 3: Cross multiply
    120,978.93x = 166,941.39 × 67,260.66
  4. Step 4: Simplify right side
    120,978.93x = 11,228,588,072.72
  5. Step 5: Solve for x
    x = 11,228,588,072.72/120,978.93
  6. Step 6: Final answer
    x = 92,814.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.