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Finding the Fourth Proportional to 133,265.79, 183,906.80 and 72,836.42

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Solution

The fourth proportional to 133,265.79, 183,906.80 and 72,836.42 is: 100,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,265.79 : 183,906.80 = 72,836.42 : x
  2. Step 2: Convert to fraction form
    133,265.79/183,906.80 = 72,836.42/x
  3. Step 3: Cross multiply
    133,265.79x = 183,906.80 × 72,836.42
  4. Step 4: Simplify right side
    133,265.79x = 13,395,113,014.43
  5. Step 5: Solve for x
    x = 13,395,113,014.43/133,265.79
  6. Step 6: Final answer
    x = 100,514.26

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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.