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Finding the Fourth Proportional to 133,238.38, 183,868.77 and 72,809.56

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Solution

The fourth proportional to 133,238.38, 183,868.77 and 72,809.56 is: 100,477.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,238.38 : 183,868.77 = 72,809.56 : x
  2. Step 2: Convert to fraction form
    133,238.38/183,868.77 = 72,809.56/x
  3. Step 3: Cross multiply
    133,238.38x = 183,868.77 × 72,809.56
  4. Step 4: Simplify right side
    133,238.38x = 13,387,404,241.44
  5. Step 5: Solve for x
    x = 13,387,404,241.44/133,238.38
  6. Step 6: Final answer
    x = 100,477.09

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1.5x scale

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.