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Finding the Fourth Proportional to 135,250.71, 186,583.14 and 87,519.48

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Solution

The fourth proportional to 135,250.71, 186,583.14 and 87,519.48 is: 120,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,250.71 : 186,583.14 = 87,519.48 : x
  2. Step 2: Convert to fraction form
    135,250.71/186,583.14 = 87,519.48/x
  3. Step 3: Cross multiply
    135,250.71x = 186,583.14 × 87,519.48
  4. Step 4: Simplify right side
    135,250.71x = 16,329,659,389.57
  5. Step 5: Solve for x
    x = 16,329,659,389.57/135,250.71
  6. Step 6: Final answer
    x = 120,736.22

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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.