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Finding the Fourth Proportional to 133,238.09, 183,879.05 and 75,879.84

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Solution

The fourth proportional to 133,238.09, 183,879.05 and 75,879.84 is: 104,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,238.09 : 183,879.05 = 75,879.84 : x
  2. Step 2: Convert to fraction form
    133,238.09/183,879.05 = 75,879.84/x
  3. Step 3: Cross multiply
    133,238.09x = 183,879.05 × 75,879.84
  4. Step 4: Simplify right side
    133,238.09x = 13,952,712,893.35
  5. Step 5: Solve for x
    x = 13,952,712,893.35/133,238.09
  6. Step 6: Final answer
    x = 104,720.15

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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.