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Finding the Fourth Proportional to 171,807.62, 257,448.39 and 71,913.42

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Solution

The fourth proportional to 171,807.62, 257,448.39 and 71,913.42 is: 107,760.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,807.62 : 257,448.39 = 71,913.42 : x
  2. Step 2: Convert to fraction form
    171,807.62/257,448.39 = 71,913.42/x
  3. Step 3: Cross multiply
    171,807.62x = 257,448.39 × 71,913.42
  4. Step 4: Simplify right side
    171,807.62x = 18,513,994,333.23
  5. Step 5: Solve for x
    x = 18,513,994,333.23/171,807.62
  6. Step 6: Final answer
    x = 107,760.03

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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.