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Finding the Fourth Proportional to 113,238.30, 169,873.47 and 38,379.78

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Solution

The fourth proportional to 113,238.30, 169,873.47 and 38,379.78 is: 57,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,238.30 : 169,873.47 = 38,379.78 : x
  2. Step 2: Convert to fraction form
    113,238.30/169,873.47 = 38,379.78/x
  3. Step 3: Cross multiply
    113,238.30x = 169,873.47 × 38,379.78
  4. Step 4: Simplify right side
    113,238.30x = 6,519,706,406.44
  5. Step 5: Solve for x
    x = 6,519,706,406.44/113,238.30
  6. Step 6: Final answer
    x = 57,575.10

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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.