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Finding the Fourth Proportional to 135,469.54, 186,907.52 and 87,647.14

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Solution

The fourth proportional to 135,469.54, 186,907.52 and 87,647.14 is: 120,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,469.54 : 186,907.52 = 87,647.14 : x
  2. Step 2: Convert to fraction form
    135,469.54/186,907.52 = 87,647.14/x
  3. Step 3: Cross multiply
    135,469.54x = 186,907.52 × 87,647.14
  4. Step 4: Simplify right side
    135,469.54x = 16,381,909,572.49
  5. Step 5: Solve for x
    x = 16,381,909,572.49/135,469.54
  6. Step 6: Final answer
    x = 120,926.89

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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.