Home / 129,688.82-194,393.07-54,791.54

Finding the Fourth Proportional to 129,688.82, 194,393.07 and 54,791.54

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Solution

The fourth proportional to 129,688.82, 194,393.07 and 54,791.54 is: 82,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,688.82 : 194,393.07 = 54,791.54 : x
  2. Step 2: Convert to fraction form
    129,688.82/194,393.07 = 54,791.54/x
  3. Step 3: Cross multiply
    129,688.82x = 194,393.07 × 54,791.54
  4. Step 4: Simplify right side
    129,688.82x = 10,651,095,670.63
  5. Step 5: Solve for x
    x = 10,651,095,670.63/129,688.82
  6. Step 6: Final answer
    x = 82,128.09

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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.