Home / 120,201.70-165,867.21-66,485.56

Finding the Fourth Proportional to 120,201.70, 165,867.21 and 66,485.56

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Solution

The fourth proportional to 120,201.70, 165,867.21 and 66,485.56 is: 91,743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,201.70 : 165,867.21 = 66,485.56 : x
  2. Step 2: Convert to fraction form
    120,201.70/165,867.21 = 66,485.56/x
  3. Step 3: Cross multiply
    120,201.70x = 165,867.21 × 66,485.56
  4. Step 4: Simplify right side
    120,201.70x = 11,027,774,218.26
  5. Step 5: Solve for x
    x = 11,027,774,218.26/120,201.70
  6. Step 6: Final answer
    x = 91,743.91

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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.