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Finding the Fourth Proportional to 171,946.60, 257,843.10 and 66,730.60

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Solution

The fourth proportional to 171,946.60, 257,843.10 and 66,730.60 is: 100,066.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,946.60 : 257,843.10 = 66,730.60 : x
  2. Step 2: Convert to fraction form
    171,946.60/257,843.10 = 66,730.60/x
  3. Step 3: Cross multiply
    171,946.60x = 257,843.10 × 66,730.60
  4. Step 4: Simplify right side
    171,946.60x = 17,206,024,768.86
  5. Step 5: Solve for x
    x = 17,206,024,768.86/171,946.60
  6. Step 6: Final answer
    x = 100,066.09

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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.