Home / 136,204.35-187,984.89-78,845.19

Finding the Fourth Proportional to 136,204.35, 187,984.89 and 78,845.19

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Solution

The fourth proportional to 136,204.35, 187,984.89 and 78,845.19 is: 108,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,204.35 : 187,984.89 = 78,845.19 : x
  2. Step 2: Convert to fraction form
    136,204.35/187,984.89 = 78,845.19/x
  3. Step 3: Cross multiply
    136,204.35x = 187,984.89 × 78,845.19
  4. Step 4: Simplify right side
    136,204.35x = 14,821,704,369.18
  5. Step 5: Solve for x
    x = 14,821,704,369.18/136,204.35
  6. Step 6: Final answer
    x = 108,819.61

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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.