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Finding the Fourth Proportional to 120,699.63, 166,640.63 and 113,168.25

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Solution

The fourth proportional to 120,699.63, 166,640.63 and 113,168.25 is: 156,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,699.63 : 166,640.63 = 113,168.25 : x
  2. Step 2: Convert to fraction form
    120,699.63/166,640.63 = 113,168.25/x
  3. Step 3: Cross multiply
    120,699.63x = 166,640.63 × 113,168.25
  4. Step 4: Simplify right side
    120,699.63x = 18,858,427,910.16
  5. Step 5: Solve for x
    x = 18,858,427,910.16/120,699.63
  6. Step 6: Final answer
    x = 156,242.63

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1.5x scale

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.