Home / 85,108.06-117,195.56-83,219.88

Finding the Fourth Proportional to 85,108.06, 117,195.56 and 83,219.88

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Solution

The fourth proportional to 85,108.06, 117,195.56 and 83,219.88 is: 114,595.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.06 : 117,195.56 = 83,219.88 : x
  2. Step 2: Convert to fraction form
    85,108.06/117,195.56 = 83,219.88/x
  3. Step 3: Cross multiply
    85,108.06x = 117,195.56 × 83,219.88
  4. Step 4: Simplify right side
    85,108.06x = 9,753,000,439.73
  5. Step 5: Solve for x
    x = 9,753,000,439.73/85,108.06
  6. Step 6: Final answer
    x = 114,595.50

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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.