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Finding the Fourth Proportional to 135,637.60, 203,650.80 and 102,589.60

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Solution

The fourth proportional to 135,637.60, 203,650.80 and 102,589.60 is: 154,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,637.60 : 203,650.80 = 102,589.60 : x
  2. Step 2: Convert to fraction form
    135,637.60/203,650.80 = 102,589.60/x
  3. Step 3: Cross multiply
    135,637.60x = 203,650.80 × 102,589.60
  4. Step 4: Simplify right side
    135,637.60x = 20,892,454,111.68
  5. Step 5: Solve for x
    x = 20,892,454,111.68/135,637.60
  6. Step 6: Final answer
    x = 154,031.43

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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.