Home / 82,090.79-123,136.20-19,761.29

Finding the Fourth Proportional to 82,090.79, 123,136.20 and 19,761.29

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Solution

The fourth proportional to 82,090.79, 123,136.20 and 19,761.29 is: 29,641.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,090.79 : 123,136.20 = 19,761.29 : x
  2. Step 2: Convert to fraction form
    82,090.79/123,136.20 = 19,761.29/x
  3. Step 3: Cross multiply
    82,090.79x = 123,136.20 × 19,761.29
  4. Step 4: Simplify right side
    82,090.79x = 2,433,330,157.70
  5. Step 5: Solve for x
    x = 2,433,330,157.70/82,090.79
  6. Step 6: Final answer
    x = 29,641.94

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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.