Home / 120,080.82-165,586.91-103,140.75

Finding the Fourth Proportional to 120,080.82, 165,586.91 and 103,140.75

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Solution

The fourth proportional to 120,080.82, 165,586.91 and 103,140.75 is: 142,227.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,080.82 : 165,586.91 = 103,140.75 : x
  2. Step 2: Convert to fraction form
    120,080.82/165,586.91 = 103,140.75/x
  3. Step 3: Cross multiply
    120,080.82x = 165,586.91 × 103,140.75
  4. Step 4: Simplify right side
    120,080.82x = 17,078,757,571.88
  5. Step 5: Solve for x
    x = 17,078,757,571.88/120,080.82
  6. Step 6: Final answer
    x = 142,227.19

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1.5x scale

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.