Home / 141,778.79-195,663.44-78,116.57

Finding the Fourth Proportional to 141,778.79, 195,663.44 and 78,116.57

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Solution

The fourth proportional to 141,778.79, 195,663.44 and 78,116.57 is: 107,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,778.79 : 195,663.44 = 78,116.57 : x
  2. Step 2: Convert to fraction form
    141,778.79/195,663.44 = 78,116.57/x
  3. Step 3: Cross multiply
    141,778.79x = 195,663.44 × 78,116.57
  4. Step 4: Simplify right side
    141,778.79x = 15,284,556,416.62
  5. Step 5: Solve for x
    x = 15,284,556,416.62/141,778.79
  6. Step 6: Final answer
    x = 107,805.66

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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.