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Finding the Fourth Proportional to 135,994.61, 203,991.87 and 42,500.36

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Solution

The fourth proportional to 135,994.61, 203,991.87 and 42,500.36 is: 63,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,994.61 : 203,991.87 = 42,500.36 : x
  2. Step 2: Convert to fraction form
    135,994.61/203,991.87 = 42,500.36/x
  3. Step 3: Cross multiply
    135,994.61x = 203,991.87 × 42,500.36
  4. Step 4: Simplify right side
    135,994.61x = 8,669,726,892.11
  5. Step 5: Solve for x
    x = 8,669,726,892.11/135,994.61
  6. Step 6: Final answer
    x = 63,750.52

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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.