Home / 141,782.09-195,659.12-78,119.87

Finding the Fourth Proportional to 141,782.09, 195,659.12 and 78,119.87

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Solution

The fourth proportional to 141,782.09, 195,659.12 and 78,119.87 is: 107,805.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,782.09 : 195,659.12 = 78,119.87 : x
  2. Step 2: Convert to fraction form
    141,782.09/195,659.12 = 78,119.87/x
  3. Step 3: Cross multiply
    141,782.09x = 195,659.12 × 78,119.87
  4. Step 4: Simplify right side
    141,782.09x = 15,284,864,235.72
  5. Step 5: Solve for x
    x = 15,284,864,235.72/141,782.09
  6. Step 6: Final answer
    x = 107,805.33

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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.