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Finding the Fourth Proportional to 135,465.90, 186,949.09 and 75,036.54

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Solution

The fourth proportional to 135,465.90, 186,949.09 and 75,036.54 is: 103,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,465.90 : 186,949.09 = 75,036.54 : x
  2. Step 2: Convert to fraction form
    135,465.90/186,949.09 = 75,036.54/x
  3. Step 3: Cross multiply
    135,465.90x = 186,949.09 × 75,036.54
  4. Step 4: Simplify right side
    135,465.90x = 14,028,012,351.02
  5. Step 5: Solve for x
    x = 14,028,012,351.02/135,465.90
  6. Step 6: Final answer
    x = 103,553.83

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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.