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Finding the Fourth Proportional to 135,362.88, 186,796.72 and 74,936

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Solution

The fourth proportional to 135,362.88, 186,796.72 and 74,936 is: 103,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,362.88 : 186,796.72 = 74,936 : x
  2. Step 2: Convert to fraction form
    135,362.88/186,796.72 = 74,936/x
  3. Step 3: Cross multiply
    135,362.88x = 186,796.72 × 74,936
  4. Step 4: Simplify right side
    135,362.88x = 13,997,799,009.92
  5. Step 5: Solve for x
    x = 13,997,799,009.92/135,362.88
  6. Step 6: Final answer
    x = 103,409.44

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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.