Home / 105,845.80-158,768.70-76,199.80

Finding the Fourth Proportional to 105,845.80, 158,768.70 and 76,199.80

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Solution

The fourth proportional to 105,845.80, 158,768.70 and 76,199.80 is: 114,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,845.80 : 158,768.70 = 76,199.80 : x
  2. Step 2: Convert to fraction form
    105,845.80/158,768.70 = 76,199.80/x
  3. Step 3: Cross multiply
    105,845.80x = 158,768.70 × 76,199.80
  4. Step 4: Simplify right side
    105,845.80x = 12,098,143,186.26
  5. Step 5: Solve for x
    x = 12,098,143,186.26/105,845.80
  6. Step 6: Final answer
    x = 114,299.70

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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.