Home / 170,919.45-256,535.91-86,739.39

Finding the Fourth Proportional to 170,919.45, 256,535.91 and 86,739.39

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Solution

The fourth proportional to 170,919.45, 256,535.91 and 86,739.39 is: 130,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,919.45 : 256,535.91 = 86,739.39 : x
  2. Step 2: Convert to fraction form
    170,919.45/256,535.91 = 86,739.39/x
  3. Step 3: Cross multiply
    170,919.45x = 256,535.91 × 86,739.39
  4. Step 4: Simplify right side
    170,919.45x = 22,251,768,346.49
  5. Step 5: Solve for x
    x = 22,251,768,346.49/170,919.45
  6. Step 6: Final answer
    x = 130,188.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.