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Finding the Fourth Proportional to 423,668.25, 635,501.79 and 108,125.15

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Solution

The fourth proportional to 423,668.25, 635,501.79 and 108,125.15 is: 162,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,668.25 : 635,501.79 = 108,125.15 : x
  2. Step 2: Convert to fraction form
    423,668.25/635,501.79 = 108,125.15/x
  3. Step 3: Cross multiply
    423,668.25x = 635,501.79 × 108,125.15
  4. Step 4: Simplify right side
    423,668.25x = 68,713,723,191.51
  5. Step 5: Solve for x
    x = 68,713,723,191.51/423,668.25
  6. Step 6: Final answer
    x = 162,187.57

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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.