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Finding the Fourth Proportional to 103,379.56, 155,090.90 and 36,819.43

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Solution

The fourth proportional to 103,379.56, 155,090.90 and 36,819.43 is: 55,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,379.56 : 155,090.90 = 36,819.43 : x
  2. Step 2: Convert to fraction form
    103,379.56/155,090.90 = 36,819.43/x
  3. Step 3: Cross multiply
    103,379.56x = 155,090.90 × 36,819.43
  4. Step 4: Simplify right side
    103,379.56x = 5,710,358,240.51
  5. Step 5: Solve for x
    x = 5,710,358,240.51/103,379.56
  6. Step 6: Final answer
    x = 55,236.82

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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.