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Finding the Fourth Proportional to 133,076.54, 183,645.69 and 76,487.78

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Solution

The fourth proportional to 133,076.54, 183,645.69 and 76,487.78 is: 105,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,076.54 : 183,645.69 = 76,487.78 : x
  2. Step 2: Convert to fraction form
    133,076.54/183,645.69 = 76,487.78/x
  3. Step 3: Cross multiply
    133,076.54x = 183,645.69 × 76,487.78
  4. Step 4: Simplify right side
    133,076.54x = 14,046,651,134.67
  5. Step 5: Solve for x
    x = 14,046,651,134.67/133,076.54
  6. Step 6: Final answer
    x = 105,553.17

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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.