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Finding the Fourth Proportional to 135,379.90, 203,100.99 and 45,434.55

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Solution

The fourth proportional to 135,379.90, 203,100.99 and 45,434.55 is: 68,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,379.90 : 203,100.99 = 45,434.55 : x
  2. Step 2: Convert to fraction form
    135,379.90/203,100.99 = 45,434.55/x
  3. Step 3: Cross multiply
    135,379.90x = 203,100.99 × 45,434.55
  4. Step 4: Simplify right side
    135,379.90x = 9,227,802,488.59
  5. Step 5: Solve for x
    x = 9,227,802,488.59/135,379.90
  6. Step 6: Final answer
    x = 68,162.28

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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.