Home / 82,133.04-123,198.48-19,803

Finding the Fourth Proportional to 82,133.04, 123,198.48 and 19,803

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Solution

The fourth proportional to 82,133.04, 123,198.48 and 19,803 is: 29,704.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,133.04 : 123,198.48 = 19,803 : x
  2. Step 2: Convert to fraction form
    82,133.04/123,198.48 = 19,803/x
  3. Step 3: Cross multiply
    82,133.04x = 123,198.48 × 19,803
  4. Step 4: Simplify right side
    82,133.04x = 2,439,699,499.44
  5. Step 5: Solve for x
    x = 2,439,699,499.44/82,133.04
  6. Step 6: Final answer
    x = 29,704.24

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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.