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Finding the Fourth Proportional to 445,118.78, 667,679.00 and 108,159.71

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Solution

The fourth proportional to 445,118.78, 667,679.00 and 108,159.71 is: 162,239.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,118.78 : 667,679.00 = 108,159.71 : x
  2. Step 2: Convert to fraction form
    445,118.78/667,679.00 = 108,159.71/x
  3. Step 3: Cross multiply
    445,118.78x = 667,679.00 × 108,159.71
  4. Step 4: Simplify right side
    445,118.78x = 72,215,963,133.90
  5. Step 5: Solve for x
    x = 72,215,963,133.90/445,118.78
  6. Step 6: Final answer
    x = 162,239.76

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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.