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Finding the Fourth Proportional to 133,028.31, 183,571.71 and 75,659.88

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Solution

The fourth proportional to 133,028.31, 183,571.71 and 75,659.88 is: 104,406.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.31 : 183,571.71 = 75,659.88 : x
  2. Step 2: Convert to fraction form
    133,028.31/183,571.71 = 75,659.88/x
  3. Step 3: Cross multiply
    133,028.31x = 183,571.71 × 75,659.88
  4. Step 4: Simplify right side
    133,028.31x = 13,889,013,549.99
  5. Step 5: Solve for x
    x = 13,889,013,549.99/133,028.31
  6. Step 6: Final answer
    x = 104,406.45

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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.