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Finding the Fourth Proportional to 172,704.56, 258,572.84 and 130,451.68

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Solution

The fourth proportional to 172,704.56, 258,572.84 and 130,451.68 is: 195,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,704.56 : 258,572.84 = 130,451.68 : x
  2. Step 2: Convert to fraction form
    172,704.56/258,572.84 = 130,451.68/x
  3. Step 3: Cross multiply
    172,704.56x = 258,572.84 × 130,451.68
  4. Step 4: Simplify right side
    172,704.56x = 33,731,261,380.37
  5. Step 5: Solve for x
    x = 33,731,261,380.37/172,704.56
  6. Step 6: Final answer
    x = 195,311.93

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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.