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Finding the Fourth Proportional to 171,872.18, 257,804.31 and 101,242.87

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Solution

The fourth proportional to 171,872.18, 257,804.31 and 101,242.87 is: 151,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,872.18 : 257,804.31 = 101,242.87 : x
  2. Step 2: Convert to fraction form
    171,872.18/257,804.31 = 101,242.87/x
  3. Step 3: Cross multiply
    171,872.18x = 257,804.31 × 101,242.87
  4. Step 4: Simplify right side
    171,872.18x = 26,100,848,944.69
  5. Step 5: Solve for x
    x = 26,100,848,944.69/171,872.18
  6. Step 6: Final answer
    x = 151,861.97

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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.