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Finding the Fourth Proportional to 135,244.48, 186,574.50 and 87,513.24

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Solution

The fourth proportional to 135,244.48, 186,574.50 and 87,513.24 is: 120,727.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,244.48 : 186,574.50 = 87,513.24 : x
  2. Step 2: Convert to fraction form
    135,244.48/186,574.50 = 87,513.24/x
  3. Step 3: Cross multiply
    135,244.48x = 186,574.50 × 87,513.24
  4. Step 4: Simplify right side
    135,244.48x = 16,327,738,996.38
  5. Step 5: Solve for x
    x = 16,327,738,996.38/135,244.48
  6. Step 6: Final answer
    x = 120,727.58

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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.