Home / 141,677.75-195,515.30-78,015.40

Finding the Fourth Proportional to 141,677.75, 195,515.30 and 78,015.40

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Solution

The fourth proportional to 141,677.75, 195,515.30 and 78,015.40 is: 107,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,677.75 : 195,515.30 = 78,015.40 : x
  2. Step 2: Convert to fraction form
    141,677.75/195,515.30 = 78,015.40/x
  3. Step 3: Cross multiply
    141,677.75x = 195,515.30 × 78,015.40
  4. Step 4: Simplify right side
    141,677.75x = 15,253,204,335.62
  5. Step 5: Solve for x
    x = 15,253,204,335.62/141,677.75
  6. Step 6: Final answer
    x = 107,661.25

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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.