Home / 141,778.54-195,663.09-78,116.32

Finding the Fourth Proportional to 141,778.54, 195,663.09 and 78,116.32

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Solution

The fourth proportional to 141,778.54, 195,663.09 and 78,116.32 is: 107,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,778.54 : 195,663.09 = 78,116.32 : x
  2. Step 2: Convert to fraction form
    141,778.54/195,663.09 = 78,116.32/x
  3. Step 3: Cross multiply
    141,778.54x = 195,663.09 × 78,116.32
  4. Step 4: Simplify right side
    141,778.54x = 15,284,480,550.63
  5. Step 5: Solve for x
    x = 15,284,480,550.63/141,778.54
  6. Step 6: Final answer
    x = 107,805.32

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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.