Home / 131,788.50-197,295.03-81,707.82

Finding the Fourth Proportional to 131,788.50, 197,295.03 and 81,707.82

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Solution

The fourth proportional to 131,788.50, 197,295.03 and 81,707.82 is: 122,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,788.50 : 197,295.03 = 81,707.82 : x
  2. Step 2: Convert to fraction form
    131,788.50/197,295.03 = 81,707.82/x
  3. Step 3: Cross multiply
    131,788.50x = 197,295.03 × 81,707.82
  4. Step 4: Simplify right side
    131,788.50x = 16,120,546,798.13
  5. Step 5: Solve for x
    x = 16,120,546,798.13/131,788.50
  6. Step 6: Final answer
    x = 122,321.35

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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.