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Finding the Fourth Proportional to 133,318.66, 183,977.66 and 72,887.88

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Solution

The fourth proportional to 133,318.66, 183,977.66 and 72,887.88 is: 100,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,318.66 : 183,977.66 = 72,887.88 : x
  2. Step 2: Convert to fraction form
    133,318.66/183,977.66 = 72,887.88/x
  3. Step 3: Cross multiply
    133,318.66x = 183,977.66 × 72,887.88
  4. Step 4: Simplify right side
    133,318.66x = 13,409,741,604.76
  5. Step 5: Solve for x
    x = 13,409,741,604.76/133,318.66
  6. Step 6: Final answer
    x = 100,584.13

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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.