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Finding the Fourth Proportional to 135,050.82, 186,360.54 and 74,620.82

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Solution

The fourth proportional to 135,050.82, 186,360.54 and 74,620.82 is: 102,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,050.82 : 186,360.54 = 74,620.82 : x
  2. Step 2: Convert to fraction form
    135,050.82/186,360.54 = 74,620.82/x
  3. Step 3: Cross multiply
    135,050.82x = 186,360.54 × 74,620.82
  4. Step 4: Simplify right side
    135,050.82x = 13,906,375,378.64
  5. Step 5: Solve for x
    x = 13,906,375,378.64/135,050.82
  6. Step 6: Final answer
    x = 102,971.42

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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.