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Finding the Fourth Proportional to 101,992.74, 152,661.69 and 54,489.12

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Solution

The fourth proportional to 101,992.74, 152,661.69 and 54,489.12 is: 81,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,992.74 : 152,661.69 = 54,489.12 : x
  2. Step 2: Convert to fraction form
    101,992.74/152,661.69 = 54,489.12/x
  3. Step 3: Cross multiply
    101,992.74x = 152,661.69 × 54,489.12
  4. Step 4: Simplify right side
    101,992.74x = 8,318,401,145.81
  5. Step 5: Solve for x
    x = 8,318,401,145.81/101,992.74
  6. Step 6: Final answer
    x = 81,558.76

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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.