Home / 120,103.44-165,741.80-66,392.08

Finding the Fourth Proportional to 120,103.44, 165,741.80 and 66,392.08

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Solution

The fourth proportional to 120,103.44, 165,741.80 and 66,392.08 is: 91,620.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,103.44 : 165,741.80 = 66,392.08 : x
  2. Step 2: Convert to fraction form
    120,103.44/165,741.80 = 66,392.08/x
  3. Step 3: Cross multiply
    120,103.44x = 165,741.80 × 66,392.08
  4. Step 4: Simplify right side
    120,103.44x = 11,003,942,844.94
  5. Step 5: Solve for x
    x = 11,003,942,844.94/120,103.44
  6. Step 6: Final answer
    x = 91,620.55

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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.