Home / 115,546.25-173,204.55-80,412.09

Finding the Fourth Proportional to 115,546.25, 173,204.55 and 80,412.09

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Solution

The fourth proportional to 115,546.25, 173,204.55 and 80,412.09 is: 120,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,546.25 : 173,204.55 = 80,412.09 : x
  2. Step 2: Convert to fraction form
    115,546.25/173,204.55 = 80,412.09/x
  3. Step 3: Cross multiply
    115,546.25x = 173,204.55 × 80,412.09
  4. Step 4: Simplify right side
    115,546.25x = 13,927,739,863.01
  5. Step 5: Solve for x
    x = 13,927,739,863.01/115,546.25
  6. Step 6: Final answer
    x = 120,538.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.