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Finding the Fourth Proportional to 133,236.94, 183,866.28 and 78,808.60

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Solution

The fourth proportional to 133,236.94, 183,866.28 and 78,808.60 is: 108,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,236.94 : 183,866.28 = 78,808.60 : x
  2. Step 2: Convert to fraction form
    133,236.94/183,866.28 = 78,808.60/x
  3. Step 3: Cross multiply
    133,236.94x = 183,866.28 × 78,808.60
  4. Step 4: Simplify right side
    133,236.94x = 14,490,244,114.01
  5. Step 5: Solve for x
    x = 14,490,244,114.01/133,236.94
  6. Step 6: Final answer
    x = 108,755.46

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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.