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Finding the Fourth Proportional to 135,782.98, 203,498.76 and 75,809.90

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Solution

The fourth proportional to 135,782.98, 203,498.76 and 75,809.90 is: 113,616.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,782.98 : 203,498.76 = 75,809.90 : x
  2. Step 2: Convert to fraction form
    135,782.98/203,498.76 = 75,809.90/x
  3. Step 3: Cross multiply
    135,782.98x = 203,498.76 × 75,809.90
  4. Step 4: Simplify right side
    135,782.98x = 15,427,220,645.72
  5. Step 5: Solve for x
    x = 15,427,220,645.72/135,782.98
  6. Step 6: Final answer
    x = 113,616.75

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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.