Home / 131,071.72-196,738.94-129,788.68

Finding the Fourth Proportional to 131,071.72, 196,738.94 and 129,788.68

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Solution

The fourth proportional to 131,071.72, 196,738.94 and 129,788.68 is: 194,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,071.72 : 196,738.94 = 129,788.68 : x
  2. Step 2: Convert to fraction form
    131,071.72/196,738.94 = 129,788.68/x
  3. Step 3: Cross multiply
    131,071.72x = 196,738.94 × 129,788.68
  4. Step 4: Simplify right side
    131,071.72x = 25,534,487,327.20
  5. Step 5: Solve for x
    x = 25,534,487,327.20/131,071.72
  6. Step 6: Final answer
    x = 194,813.09

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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.