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Finding the Fourth Proportional to 423,663.11, 635,494.13 and 108,120.02

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Solution

The fourth proportional to 423,663.11, 635,494.13 and 108,120.02 is: 162,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,663.11 : 635,494.13 = 108,120.02 : x
  2. Step 2: Convert to fraction form
    423,663.11/635,494.13 = 108,120.02/x
  3. Step 3: Cross multiply
    423,663.11x = 635,494.13 × 108,120.02
  4. Step 4: Simplify right side
    423,663.11x = 68,709,637,504.88
  5. Step 5: Solve for x
    x = 68,709,637,504.88/423,663.11
  6. Step 6: Final answer
    x = 162,179.89

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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.