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Finding the Fourth Proportional to 133,104.75, 183,662.88 and 78,649.34

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Solution

The fourth proportional to 133,104.75, 183,662.88 and 78,649.34 is: 108,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,104.75 : 183,662.88 = 78,649.34 : x
  2. Step 2: Convert to fraction form
    133,104.75/183,662.88 = 78,649.34/x
  3. Step 3: Cross multiply
    133,104.75x = 183,662.88 × 78,649.34
  4. Step 4: Simplify right side
    133,104.75x = 14,444,964,294.50
  5. Step 5: Solve for x
    x = 14,444,964,294.50/133,104.75
  6. Step 6: Final answer
    x = 108,523.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.