Home / 78,163.62-117,244.38-18,999.12

Finding the Fourth Proportional to 78,163.62, 117,244.38 and 18,999.12

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Solution

The fourth proportional to 78,163.62, 117,244.38 and 18,999.12 is: 28,498.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163.62 : 117,244.38 = 18,999.12 : x
  2. Step 2: Convert to fraction form
    78,163.62/117,244.38 = 18,999.12/x
  3. Step 3: Cross multiply
    78,163.62x = 117,244.38 × 18,999.12
  4. Step 4: Simplify right side
    78,163.62x = 2,227,540,044.95
  5. Step 5: Solve for x
    x = 2,227,540,044.95/78,163.62
  6. Step 6: Final answer
    x = 28,498.42

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1.5x scale

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.