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Finding the Fourth Proportional to 135,376.86, 203,251.64 and 68,862

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Solution

The fourth proportional to 135,376.86, 203,251.64 and 68,862 is: 103,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,376.86 : 203,251.64 = 68,862 : x
  2. Step 2: Convert to fraction form
    135,376.86/203,251.64 = 68,862/x
  3. Step 3: Cross multiply
    135,376.86x = 203,251.64 × 68,862
  4. Step 4: Simplify right side
    135,376.86x = 13,996,314,089.37
  5. Step 5: Solve for x
    x = 13,996,314,089.37/135,376.86
  6. Step 6: Final answer
    x = 103,387.79

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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.