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Finding the Fourth Proportional to 135,774.96, 203,602.29 and 72,579.78

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Solution

The fourth proportional to 135,774.96, 203,602.29 and 72,579.78 is: 108,837.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,774.96 : 203,602.29 = 72,579.78 : x
  2. Step 2: Convert to fraction form
    135,774.96/203,602.29 = 72,579.78/x
  3. Step 3: Cross multiply
    135,774.96x = 203,602.29 × 72,579.78
  4. Step 4: Simplify right side
    135,774.96x = 14,777,409,415.70
  5. Step 5: Solve for x
    x = 14,777,409,415.70/135,774.96
  6. Step 6: Final answer
    x = 108,837.52

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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.