Home / 131,958.90-197,981.79-87,759.54

Finding the Fourth Proportional to 131,958.90, 197,981.79 and 87,759.54

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Solution

The fourth proportional to 131,958.90, 197,981.79 and 87,759.54 is: 131,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,958.90 : 197,981.79 = 87,759.54 : x
  2. Step 2: Convert to fraction form
    131,958.90/197,981.79 = 87,759.54/x
  3. Step 3: Cross multiply
    131,958.90x = 197,981.79 × 87,759.54
  4. Step 4: Simplify right side
    131,958.90x = 17,374,790,818.78
  5. Step 5: Solve for x
    x = 17,374,790,818.78/131,958.90
  6. Step 6: Final answer
    x = 131,668.20

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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.