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Finding the Fourth Proportional to 133,186.40, 183,797.52 and 72,757.52

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Solution

The fourth proportional to 133,186.40, 183,797.52 and 72,757.52 is: 100,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,186.40 : 183,797.52 = 72,757.52 : x
  2. Step 2: Convert to fraction form
    133,186.40/183,797.52 = 72,757.52/x
  3. Step 3: Cross multiply
    133,186.40x = 183,797.52 × 72,757.52
  4. Step 4: Simplify right side
    133,186.40x = 13,372,651,737.35
  5. Step 5: Solve for x
    x = 13,372,651,737.35/133,186.40
  6. Step 6: Final answer
    x = 100,405.53

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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.