Home / 85,227.12-128,335.14-63,196.56

Finding the Fourth Proportional to 85,227.12, 128,335.14 and 63,196.56

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Solution

The fourth proportional to 85,227.12, 128,335.14 and 63,196.56 is: 95,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,227.12 : 128,335.14 = 63,196.56 : x
  2. Step 2: Convert to fraction form
    85,227.12/128,335.14 = 63,196.56/x
  3. Step 3: Cross multiply
    85,227.12x = 128,335.14 × 63,196.56
  4. Step 4: Simplify right side
    85,227.12x = 8,110,339,375.12
  5. Step 5: Solve for x
    x = 8,110,339,375.12/85,227.12
  6. Step 6: Final answer
    x = 95,161.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.