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Finding the Fourth Proportional to 135,903.90, 203,855.85 and 88,664.70

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Solution

The fourth proportional to 135,903.90, 203,855.85 and 88,664.70 is: 132,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,903.90 : 203,855.85 = 88,664.70 : x
  2. Step 2: Convert to fraction form
    135,903.90/203,855.85 = 88,664.70/x
  3. Step 3: Cross multiply
    135,903.90x = 203,855.85 × 88,664.70
  4. Step 4: Simplify right side
    135,903.90x = 18,074,817,783.50
  5. Step 5: Solve for x
    x = 18,074,817,783.50/135,903.90
  6. Step 6: Final answer
    x = 132,997.05

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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.