Home / 78,163.32-117,243.24-18,999.36

Finding the Fourth Proportional to 78,163.32, 117,243.24 and 18,999.36

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Solution

The fourth proportional to 78,163.32, 117,243.24 and 18,999.36 is: 28,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163.32 : 117,243.24 = 18,999.36 : x
  2. Step 2: Convert to fraction form
    78,163.32/117,243.24 = 18,999.36/x
  3. Step 3: Cross multiply
    78,163.32x = 117,243.24 × 18,999.36
  4. Step 4: Simplify right side
    78,163.32x = 2,227,546,524.33
  5. Step 5: Solve for x
    x = 2,227,546,524.33/78,163.32
  6. Step 6: Final answer
    x = 28,498.62

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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.