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Finding the Fourth Proportional to 85,197.56, 127,796.49 and 85,074.57

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Solution

The fourth proportional to 85,197.56, 127,796.49 and 85,074.57 is: 127,612.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,197.56 : 127,796.49 = 85,074.57 : x
  2. Step 2: Convert to fraction form
    85,197.56/127,796.49 = 85,074.57/x
  3. Step 3: Cross multiply
    85,197.56x = 127,796.49 × 85,074.57
  4. Step 4: Simplify right side
    85,197.56x = 10,872,231,434.26
  5. Step 5: Solve for x
    x = 10,872,231,434.26/85,197.56
  6. Step 6: Final answer
    x = 127,612.01

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1.5x scale

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.