Home / 141,991.16-195,949.32-78,328.40

Finding the Fourth Proportional to 141,991.16, 195,949.32 and 78,328.40

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Solution

The fourth proportional to 141,991.16, 195,949.32 and 78,328.40 is: 108,094.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,991.16 : 195,949.32 = 78,328.40 : x
  2. Step 2: Convert to fraction form
    141,991.16/195,949.32 = 78,328.40/x
  3. Step 3: Cross multiply
    141,991.16x = 195,949.32 × 78,328.40
  4. Step 4: Simplify right side
    141,991.16x = 15,348,396,716.69
  5. Step 5: Solve for x
    x = 15,348,396,716.69/141,991.16
  6. Step 6: Final answer
    x = 108,094.03

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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.