Home / 131,467.60-197,201.40-81,863.20

Finding the Fourth Proportional to 131,467.60, 197,201.40 and 81,863.20

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Solution

The fourth proportional to 131,467.60, 197,201.40 and 81,863.20 is: 122,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,467.60 : 197,201.40 = 81,863.20 : x
  2. Step 2: Convert to fraction form
    131,467.60/197,201.40 = 81,863.20/x
  3. Step 3: Cross multiply
    131,467.60x = 197,201.40 × 81,863.20
  4. Step 4: Simplify right side
    131,467.60x = 16,143,537,648.48
  5. Step 5: Solve for x
    x = 16,143,537,648.48/131,467.60
  6. Step 6: Final answer
    x = 122,794.80

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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.