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Finding the Fourth Proportional to 160,216.70, 240,469.49 and 85,399.16

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Solution

The fourth proportional to 160,216.70, 240,469.49 and 85,399.16 is: 128,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,216.70 : 240,469.49 = 85,399.16 : x
  2. Step 2: Convert to fraction form
    160,216.70/240,469.49 = 85,399.16/x
  3. Step 3: Cross multiply
    160,216.70x = 240,469.49 × 85,399.16
  4. Step 4: Simplify right side
    160,216.70x = 20,535,891,249.28
  5. Step 5: Solve for x
    x = 20,535,891,249.28/160,216.70
  6. Step 6: Final answer
    x = 128,175.73

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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.