Home / 120,072.60-180,112.55-41,185.69

Finding the Fourth Proportional to 120,072.60, 180,112.55 and 41,185.69

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Solution

The fourth proportional to 120,072.60, 180,112.55 and 41,185.69 is: 61,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,072.60 : 180,112.55 = 41,185.69 : x
  2. Step 2: Convert to fraction form
    120,072.60/180,112.55 = 41,185.69/x
  3. Step 3: Cross multiply
    120,072.60x = 180,112.55 × 41,185.69
  4. Step 4: Simplify right side
    120,072.60x = 7,418,058,993.20
  5. Step 5: Solve for x
    x = 7,418,058,993.20/120,072.60
  6. Step 6: Final answer
    x = 61,779.78

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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.