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Finding the Fourth Proportional to 133,571.75, 184,329.30 and 72,318.59

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Solution

The fourth proportional to 133,571.75, 184,329.30 and 72,318.59 is: 99,799.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,571.75 : 184,329.30 = 72,318.59 : x
  2. Step 2: Convert to fraction form
    133,571.75/184,329.30 = 72,318.59/x
  3. Step 3: Cross multiply
    133,571.75x = 184,329.30 × 72,318.59
  4. Step 4: Simplify right side
    133,571.75x = 13,330,434,150.04
  5. Step 5: Solve for x
    x = 13,330,434,150.04/133,571.75
  6. Step 6: Final answer
    x = 99,799.81

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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.