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Finding the Fourth Proportional to 129,481.76, 194,127.60 and 54,598.88

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Solution

The fourth proportional to 129,481.76, 194,127.60 and 54,598.88 is: 81,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,481.76 : 194,127.60 = 54,598.88 : x
  2. Step 2: Convert to fraction form
    129,481.76/194,127.60 = 54,598.88/x
  3. Step 3: Cross multiply
    129,481.76x = 194,127.60 × 54,598.88
  4. Step 4: Simplify right side
    129,481.76x = 10,599,149,537.09
  5. Step 5: Solve for x
    x = 10,599,149,537.09/129,481.76
  6. Step 6: Final answer
    x = 81,858.24

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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.