Home / 135,709.20-187,279.82-75,283.80

Finding the Fourth Proportional to 135,709.20, 187,279.82 and 75,283.80

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Solution

The fourth proportional to 135,709.20, 187,279.82 and 75,283.80 is: 103,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.20 : 187,279.82 = 75,283.80 : x
  2. Step 2: Convert to fraction form
    135,709.20/187,279.82 = 75,283.80/x
  3. Step 3: Cross multiply
    135,709.20x = 187,279.82 × 75,283.80
  4. Step 4: Simplify right side
    135,709.20x = 14,099,136,512.92
  5. Step 5: Solve for x
    x = 14,099,136,512.92/135,709.20
  6. Step 6: Final answer
    x = 103,892.27

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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.