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Finding the Fourth Proportional to 135,774.70, 203,596.28 and 79,633.20

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Solution

The fourth proportional to 135,774.70, 203,596.28 and 79,633.20 is: 119,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,774.70 : 203,596.28 = 79,633.20 : x
  2. Step 2: Convert to fraction form
    135,774.70/203,596.28 = 79,633.20/x
  3. Step 3: Cross multiply
    135,774.70x = 203,596.28 × 79,633.20
  4. Step 4: Simplify right side
    135,774.70x = 16,213,023,284.50
  5. Step 5: Solve for x
    x = 16,213,023,284.50/135,774.70
  6. Step 6: Final answer
    x = 119,411.23

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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.