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Finding the Fourth Proportional to 101,019.92, 151,623.36 and 51,135.05

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Solution

The fourth proportional to 101,019.92, 151,623.36 and 51,135.05 is: 76,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,019.92 : 151,623.36 = 51,135.05 : x
  2. Step 2: Convert to fraction form
    101,019.92/151,623.36 = 51,135.05/x
  3. Step 3: Cross multiply
    101,019.92x = 151,623.36 × 51,135.05
  4. Step 4: Simplify right side
    101,019.92x = 7,753,267,336.65
  5. Step 5: Solve for x
    x = 7,753,267,336.65/101,019.92
  6. Step 6: Final answer
    x = 76,749.89

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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.