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Finding the Fourth Proportional to 135,486.84, 203,355 and 68,974.50

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Solution

The fourth proportional to 135,486.84, 203,355 and 68,974.50 is: 103,525.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,486.84 : 203,355 = 68,974.50 : x
  2. Step 2: Convert to fraction form
    135,486.84/203,355 = 68,974.50/x
  3. Step 3: Cross multiply
    135,486.84x = 203,355 × 68,974.50
  4. Step 4: Simplify right side
    135,486.84x = 14,026,309,447.50
  5. Step 5: Solve for x
    x = 14,026,309,447.50/135,486.84
  6. Step 6: Final answer
    x = 103,525.25

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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.