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Finding the Fourth Proportional to 133,668.89, 200,515.65 and 43,712.07

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Solution

The fourth proportional to 133,668.89, 200,515.65 and 43,712.07 is: 65,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,668.89 : 200,515.65 = 43,712.07 : x
  2. Step 2: Convert to fraction form
    133,668.89/200,515.65 = 43,712.07/x
  3. Step 3: Cross multiply
    133,668.89x = 200,515.65 × 43,712.07
  4. Step 4: Simplify right side
    133,668.89x = 8,764,954,128.90
  5. Step 5: Solve for x
    x = 8,764,954,128.90/133,668.89
  6. Step 6: Final answer
    x = 65,572.13

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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.