Home / 141,778.29-195,662.75-78,116.07

Finding the Fourth Proportional to 141,778.29, 195,662.75 and 78,116.07

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Solution

The fourth proportional to 141,778.29, 195,662.75 and 78,116.07 is: 107,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,778.29 : 195,662.75 = 78,116.07 : x
  2. Step 2: Convert to fraction form
    141,778.29/195,662.75 = 78,116.07/x
  3. Step 3: Cross multiply
    141,778.29x = 195,662.75 × 78,116.07
  4. Step 4: Simplify right side
    141,778.29x = 15,284,404,684.81
  5. Step 5: Solve for x
    x = 15,284,404,684.81/141,778.29
  6. Step 6: Final answer
    x = 107,804.97

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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.