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Finding the Fourth Proportional to 423,664.99, 635,496.93 and 108,121.90

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Solution

The fourth proportional to 423,664.99, 635,496.93 and 108,121.90 is: 162,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,664.99 : 635,496.93 = 108,121.90 : x
  2. Step 2: Convert to fraction form
    423,664.99/635,496.93 = 108,121.90/x
  3. Step 3: Cross multiply
    423,664.99x = 635,496.93 × 108,121.90
  4. Step 4: Simplify right side
    423,664.99x = 68,711,135,515.77
  5. Step 5: Solve for x
    x = 68,711,135,515.77/423,664.99
  6. Step 6: Final answer
    x = 162,182.71

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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.