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Finding the Fourth Proportional to 136,632.56, 204,958.56 and 43,137.50

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Solution

The fourth proportional to 136,632.56, 204,958.56 and 43,137.50 is: 64,709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,632.56 : 204,958.56 = 43,137.50 : x
  2. Step 2: Convert to fraction form
    136,632.56/204,958.56 = 43,137.50/x
  3. Step 3: Cross multiply
    136,632.56x = 204,958.56 × 43,137.50
  4. Step 4: Simplify right side
    136,632.56x = 8,841,399,882
  5. Step 5: Solve for x
    x = 8,841,399,882/136,632.56
  6. Step 6: Final answer
    x = 64,709.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.