Home / 141,775.62-195,650.36-78,112.86

Finding the Fourth Proportional to 141,775.62, 195,650.36 and 78,112.86

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Solution

The fourth proportional to 141,775.62, 195,650.36 and 78,112.86 is: 107,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,775.62 : 195,650.36 = 78,112.86 : x
  2. Step 2: Convert to fraction form
    141,775.62/195,650.36 = 78,112.86/x
  3. Step 3: Cross multiply
    141,775.62x = 195,650.36 × 78,112.86
  4. Step 4: Simplify right side
    141,775.62x = 15,282,809,179.63
  5. Step 5: Solve for x
    x = 15,282,809,179.63/141,775.62
  6. Step 6: Final answer
    x = 107,795.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.