Home / 85,110.08-117,198.30-83,221.88

Finding the Fourth Proportional to 85,110.08, 117,198.30 and 83,221.88

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Solution

The fourth proportional to 85,110.08, 117,198.30 and 83,221.88 is: 114,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,110.08 : 117,198.30 = 83,221.88 : x
  2. Step 2: Convert to fraction form
    85,110.08/117,198.30 = 83,221.88/x
  3. Step 3: Cross multiply
    85,110.08x = 117,198.30 × 83,221.88
  4. Step 4: Simplify right side
    85,110.08x = 9,753,462,858.80
  5. Step 5: Solve for x
    x = 9,753,462,858.80/85,110.08
  6. Step 6: Final answer
    x = 114,598.21

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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.