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Finding the Fourth Proportional to 172,890.60, 257,517.65 and 164,801

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Solution

The fourth proportional to 172,890.60, 257,517.65 and 164,801 is: 245,468.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,890.60 : 257,517.65 = 164,801 : x
  2. Step 2: Convert to fraction form
    172,890.60/257,517.65 = 164,801/x
  3. Step 3: Cross multiply
    172,890.60x = 257,517.65 × 164,801
  4. Step 4: Simplify right side
    172,890.60x = 42,439,166,237.65
  5. Step 5: Solve for x
    x = 42,439,166,237.65/172,890.60
  6. Step 6: Final answer
    x = 245,468.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.