Home / 82,092.30-123,138.45-19,762.80

Finding the Fourth Proportional to 82,092.30, 123,138.45 and 19,762.80

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Solution

The fourth proportional to 82,092.30, 123,138.45 and 19,762.80 is: 29,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,092.30 : 123,138.45 = 19,762.80 : x
  2. Step 2: Convert to fraction form
    82,092.30/123,138.45 = 19,762.80/x
  3. Step 3: Cross multiply
    82,092.30x = 123,138.45 × 19,762.80
  4. Step 4: Simplify right side
    82,092.30x = 2,433,560,559.66
  5. Step 5: Solve for x
    x = 2,433,560,559.66/82,092.30
  6. Step 6: Final answer
    x = 29,644.20

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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.