Home / 141,982.75-195,921.07-78,320.55

Finding the Fourth Proportional to 141,982.75, 195,921.07 and 78,320.55

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Solution

The fourth proportional to 141,982.75, 195,921.07 and 78,320.55 is: 108,074.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,982.75 : 195,921.07 = 78,320.55 : x
  2. Step 2: Convert to fraction form
    141,982.75/195,921.07 = 78,320.55/x
  3. Step 3: Cross multiply
    141,982.75x = 195,921.07 × 78,320.55
  4. Step 4: Simplify right side
    141,982.75x = 15,344,645,567.39
  5. Step 5: Solve for x
    x = 15,344,645,567.39/141,982.75
  6. Step 6: Final answer
    x = 108,074.01

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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.