Home / 98,179.40-135,488.22-55,738.64

Finding the Fourth Proportional to 98,179.40, 135,488.22 and 55,738.64

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Solution

The fourth proportional to 98,179.40, 135,488.22 and 55,738.64 is: 76,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,179.40 : 135,488.22 = 55,738.64 : x
  2. Step 2: Convert to fraction form
    98,179.40/135,488.22 = 55,738.64/x
  3. Step 3: Cross multiply
    98,179.40x = 135,488.22 × 55,738.64
  4. Step 4: Simplify right side
    98,179.40x = 7,551,929,118.82
  5. Step 5: Solve for x
    x = 7,551,929,118.82/98,179.40
  6. Step 6: Final answer
    x = 76,919.69

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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.