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Finding the Fourth Proportional to 171,082.40, 256,665.40 and 120,579.92

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Solution

The fourth proportional to 171,082.40, 256,665.40 and 120,579.92 is: 180,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,082.40 : 256,665.40 = 120,579.92 : x
  2. Step 2: Convert to fraction form
    171,082.40/256,665.40 = 120,579.92/x
  3. Step 3: Cross multiply
    171,082.40x = 256,665.40 × 120,579.92
  4. Step 4: Simplify right side
    171,082.40x = 30,948,693,398.77
  5. Step 5: Solve for x
    x = 30,948,693,398.77/171,082.40
  6. Step 6: Final answer
    x = 180,899.34

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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.