Home / 255,939.96-383,983.73-78,473.15

Finding the Fourth Proportional to 255,939.96, 383,983.73 and 78,473.15

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Solution

The fourth proportional to 255,939.96, 383,983.73 and 78,473.15 is: 117,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,939.96 : 383,983.73 = 78,473.15 : x
  2. Step 2: Convert to fraction form
    255,939.96/383,983.73 = 78,473.15/x
  3. Step 3: Cross multiply
    255,939.96x = 383,983.73 × 78,473.15
  4. Step 4: Simplify right side
    255,939.96x = 30,132,410,529.57
  5. Step 5: Solve for x
    x = 30,132,410,529.57/255,939.96
  6. Step 6: Final answer
    x = 117,732.34

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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.