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Finding the Fourth Proportional to 171,704.92, 257,505 and 118,737.40

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Solution

The fourth proportional to 171,704.92, 257,505 and 118,737.40 is: 178,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,704.92 : 257,505 = 118,737.40 : x
  2. Step 2: Convert to fraction form
    171,704.92/257,505 = 118,737.40/x
  3. Step 3: Cross multiply
    171,704.92x = 257,505 × 118,737.40
  4. Step 4: Simplify right side
    171,704.92x = 30,575,474,187
  5. Step 5: Solve for x
    x = 30,575,474,187/171,704.92
  6. Step 6: Final answer
    x = 178,069.88

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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.