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Finding the Fourth Proportional to 133,859.28, 184,729.80 and 74,242

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Solution

The fourth proportional to 133,859.28, 184,729.80 and 74,242 is: 102,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,859.28 : 184,729.80 = 74,242 : x
  2. Step 2: Convert to fraction form
    133,859.28/184,729.80 = 74,242/x
  3. Step 3: Cross multiply
    133,859.28x = 184,729.80 × 74,242
  4. Step 4: Simplify right side
    133,859.28x = 13,714,709,811.60
  5. Step 5: Solve for x
    x = 13,714,709,811.60/133,859.28
  6. Step 6: Final answer
    x = 102,456.17

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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.