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Finding the Fourth Proportional to 133,079.88, 183,687.30 and 76,509.48

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Solution

The fourth proportional to 133,079.88, 183,687.30 and 76,509.48 is: 105,604.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.88 : 183,687.30 = 76,509.48 : x
  2. Step 2: Convert to fraction form
    133,079.88/183,687.30 = 76,509.48/x
  3. Step 3: Cross multiply
    133,079.88x = 183,687.30 × 76,509.48
  4. Step 4: Simplify right side
    133,079.88x = 14,053,819,805.60
  5. Step 5: Solve for x
    x = 14,053,819,805.60/133,079.88
  6. Step 6: Final answer
    x = 105,604.39

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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.