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Finding the Fourth Proportional to 125,262.81, 187,891.53 and 30,493.49

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Solution

The fourth proportional to 125,262.81, 187,891.53 and 30,493.49 is: 45,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,262.81 : 187,891.53 = 30,493.49 : x
  2. Step 2: Convert to fraction form
    125,262.81/187,891.53 = 30,493.49/x
  3. Step 3: Cross multiply
    125,262.81x = 187,891.53 × 30,493.49
  4. Step 4: Simplify right side
    125,262.81x = 5,729,467,551.68
  5. Step 5: Solve for x
    x = 5,729,467,551.68/125,262.81
  6. Step 6: Final answer
    x = 45,739.57

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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.