Home / 120,326.56-165,949.92-90,182.64

Finding the Fourth Proportional to 120,326.56, 165,949.92 and 90,182.64

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Solution

The fourth proportional to 120,326.56, 165,949.92 and 90,182.64 is: 124,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,326.56 : 165,949.92 = 90,182.64 : x
  2. Step 2: Convert to fraction form
    120,326.56/165,949.92 = 90,182.64/x
  3. Step 3: Cross multiply
    120,326.56x = 165,949.92 × 90,182.64
  4. Step 4: Simplify right side
    120,326.56x = 14,965,801,893.39
  5. Step 5: Solve for x
    x = 14,965,801,893.39/120,326.56
  6. Step 6: Final answer
    x = 124,376.55

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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.