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Finding the Fourth Proportional to 129,485, 194,227.56 and 35,991.56

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Solution

The fourth proportional to 129,485, 194,227.56 and 35,991.56 is: 53,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,485 : 194,227.56 = 35,991.56 : x
  2. Step 2: Convert to fraction form
    129,485/194,227.56 = 35,991.56/x
  3. Step 3: Cross multiply
    129,485x = 194,227.56 × 35,991.56
  4. Step 4: Simplify right side
    129,485x = 6,990,552,879.39
  5. Step 5: Solve for x
    x = 6,990,552,879.39/129,485
  6. Step 6: Final answer
    x = 53,987.36

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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.