Home / 129,709.70-194,456.55-54,887.30

Finding the Fourth Proportional to 129,709.70, 194,456.55 and 54,887.30

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Solution

The fourth proportional to 129,709.70, 194,456.55 and 54,887.30 is: 82,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,709.70 : 194,456.55 = 54,887.30 : x
  2. Step 2: Convert to fraction form
    129,709.70/194,456.55 = 54,887.30/x
  3. Step 3: Cross multiply
    129,709.70x = 194,456.55 × 54,887.30
  4. Step 4: Simplify right side
    129,709.70x = 10,673,194,996.82
  5. Step 5: Solve for x
    x = 10,673,194,996.82/129,709.70
  6. Step 6: Final answer
    x = 82,285.25

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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.