Home / 141,520.20-195,290.82-77,856.36

Finding the Fourth Proportional to 141,520.20, 195,290.82 and 77,856.36

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Solution

The fourth proportional to 141,520.20, 195,290.82 and 77,856.36 is: 107,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,520.20 : 195,290.82 = 77,856.36 : x
  2. Step 2: Convert to fraction form
    141,520.20/195,290.82 = 77,856.36/x
  3. Step 3: Cross multiply
    141,520.20x = 195,290.82 × 77,856.36
  4. Step 4: Simplify right side
    141,520.20x = 15,204,632,386.62
  5. Step 5: Solve for x
    x = 15,204,632,386.62/141,520.20
  6. Step 6: Final answer
    x = 107,437.89

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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.