Home / 141,813.60-195,693.48-78,151.38

Finding the Fourth Proportional to 141,813.60, 195,693.48 and 78,151.38

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Solution

The fourth proportional to 141,813.60, 195,693.48 and 78,151.38 is: 107,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,813.60 : 195,693.48 = 78,151.38 : x
  2. Step 2: Convert to fraction form
    141,813.60/195,693.48 = 78,151.38/x
  3. Step 3: Cross multiply
    141,813.60x = 195,693.48 × 78,151.38
  4. Step 4: Simplify right side
    141,813.60x = 15,293,715,519.00
  5. Step 5: Solve for x
    x = 15,293,715,519.00/141,813.60
  6. Step 6: Final answer
    x = 107,843.79

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1.5x scale

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.