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Finding the Fourth Proportional to 170,956.70, 256,482.45 and 71,163.90

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Solution

The fourth proportional to 170,956.70, 256,482.45 and 71,163.90 is: 106,765.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,956.70 : 256,482.45 = 71,163.90 : x
  2. Step 2: Convert to fraction form
    170,956.70/256,482.45 = 71,163.90/x
  3. Step 3: Cross multiply
    170,956.70x = 256,482.45 × 71,163.90
  4. Step 4: Simplify right side
    170,956.70x = 18,252,291,423.56
  5. Step 5: Solve for x
    x = 18,252,291,423.56/170,956.70
  6. Step 6: Final answer
    x = 106,765.58

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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.