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Finding the Fourth Proportional to 179,469.90, 269,203.64 and 85,691.34

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Solution

The fourth proportional to 179,469.90, 269,203.64 and 85,691.34 is: 128,536.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,469.90 : 269,203.64 = 85,691.34 : x
  2. Step 2: Convert to fraction form
    179,469.90/269,203.64 = 85,691.34/x
  3. Step 3: Cross multiply
    179,469.90x = 269,203.64 × 85,691.34
  4. Step 4: Simplify right side
    179,469.90x = 23,068,420,216.02
  5. Step 5: Solve for x
    x = 23,068,420,216.02/179,469.90
  6. Step 6: Final answer
    x = 128,536.43

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1.5x scale

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.