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Finding the Fourth Proportional to 171,772.52, 257,735.45 and 66,599.69

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Solution

The fourth proportional to 171,772.52, 257,735.45 and 66,599.69 is: 99,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,772.52 : 257,735.45 = 66,599.69 : x
  2. Step 2: Convert to fraction form
    171,772.52/257,735.45 = 66,599.69/x
  3. Step 3: Cross multiply
    171,772.52x = 257,735.45 × 66,599.69
  4. Step 4: Simplify right side
    171,772.52x = 17,165,099,949.83
  5. Step 5: Solve for x
    x = 17,165,099,949.83/171,772.52
  6. Step 6: Final answer
    x = 99,929.26

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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.