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Finding the Fourth Proportional to 120,652.62, 166,501.62 and 66,941.16

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Solution

The fourth proportional to 120,652.62, 166,501.62 and 66,941.16 is: 92,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,652.62 : 166,501.62 = 66,941.16 : x
  2. Step 2: Convert to fraction form
    120,652.62/166,501.62 = 66,941.16/x
  3. Step 3: Cross multiply
    120,652.62x = 166,501.62 × 66,941.16
  4. Step 4: Simplify right side
    120,652.62x = 11,145,811,584.68
  5. Step 5: Solve for x
    x = 11,145,811,584.68/120,652.62
  6. Step 6: Final answer
    x = 92,379.36

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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.