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Finding the Fourth Proportional to 135,356.05, 202,978.18 and 51,101.88

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Solution

The fourth proportional to 135,356.05, 202,978.18 and 51,101.88 is: 76,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,356.05 : 202,978.18 = 51,101.88 : x
  2. Step 2: Convert to fraction form
    135,356.05/202,978.18 = 51,101.88/x
  3. Step 3: Cross multiply
    135,356.05x = 202,978.18 × 51,101.88
  4. Step 4: Simplify right side
    135,356.05x = 10,372,566,596.98
  5. Step 5: Solve for x
    x = 10,372,566,596.98/135,356.05
  6. Step 6: Final answer
    x = 76,631.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.