Home / 135,910.90-187,558.32-79,311.34

Finding the Fourth Proportional to 135,910.90, 187,558.32 and 79,311.34

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Solution

The fourth proportional to 135,910.90, 187,558.32 and 79,311.34 is: 109,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,910.90 : 187,558.32 = 79,311.34 : x
  2. Step 2: Convert to fraction form
    135,910.90/187,558.32 = 79,311.34/x
  3. Step 3: Cross multiply
    135,910.90x = 187,558.32 × 79,311.34
  4. Step 4: Simplify right side
    135,910.90x = 14,875,501,687.35
  5. Step 5: Solve for x
    x = 14,875,501,687.35/135,910.90
  6. Step 6: Final answer
    x = 109,450.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.