Home / 120,296.88-165,986.64-66,579.36

Finding the Fourth Proportional to 120,296.88, 165,986.64 and 66,579.36

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Solution

The fourth proportional to 120,296.88, 165,986.64 and 66,579.36 is: 91,866.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,296.88 : 165,986.64 = 66,579.36 : x
  2. Step 2: Convert to fraction form
    120,296.88/165,986.64 = 66,579.36/x
  3. Step 3: Cross multiply
    120,296.88x = 165,986.64 × 66,579.36
  4. Step 4: Simplify right side
    120,296.88x = 11,051,284,259.75
  5. Step 5: Solve for x
    x = 11,051,284,259.75/120,296.88
  6. Step 6: Final answer
    x = 91,866.76

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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.