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Finding the Fourth Proportional to 101,247.12, 151,911 and 38,900.88

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Solution

The fourth proportional to 101,247.12, 151,911 and 38,900.88 is: 58,366.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,247.12 : 151,911 = 38,900.88 : x
  2. Step 2: Convert to fraction form
    101,247.12/151,911 = 38,900.88/x
  3. Step 3: Cross multiply
    101,247.12x = 151,911 × 38,900.88
  4. Step 4: Simplify right side
    101,247.12x = 5,909,471,581.68
  5. Step 5: Solve for x
    x = 5,909,471,581.68/101,247.12
  6. Step 6: Final answer
    x = 58,366.81

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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.