Home / 131,493.20-197,124.60-78,846.80

Finding the Fourth Proportional to 131,493.20, 197,124.60 and 78,846.80

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Solution

The fourth proportional to 131,493.20, 197,124.60 and 78,846.80 is: 118,201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,493.20 : 197,124.60 = 78,846.80 : x
  2. Step 2: Convert to fraction form
    131,493.20/197,124.60 = 78,846.80/x
  3. Step 3: Cross multiply
    131,493.20x = 197,124.60 × 78,846.80
  4. Step 4: Simplify right side
    131,493.20x = 15,542,643,911.28
  5. Step 5: Solve for x
    x = 15,542,643,911.28/131,493.20
  6. Step 6: Final answer
    x = 118,201.12

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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.