Home / 120,917.64-166,857.66-75,615.96

Finding the Fourth Proportional to 120,917.64, 166,857.66 and 75,615.96

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Solution

The fourth proportional to 120,917.64, 166,857.66 and 75,615.96 is: 104,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,917.64 : 166,857.66 = 75,615.96 : x
  2. Step 2: Convert to fraction form
    120,917.64/166,857.66 = 75,615.96/x
  3. Step 3: Cross multiply
    120,917.64x = 166,857.66 × 75,615.96
  4. Step 4: Simplify right side
    120,917.64x = 12,617,102,144.25
  5. Step 5: Solve for x
    x = 12,617,102,144.25/120,917.64
  6. Step 6: Final answer
    x = 104,344.59

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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.