Home / 105,816.30-158,630.97-80,967.27

Finding the Fourth Proportional to 105,816.30, 158,630.97 and 80,967.27

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Solution

The fourth proportional to 105,816.30, 158,630.97 and 80,967.27 is: 121,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,816.30 : 158,630.97 = 80,967.27 : x
  2. Step 2: Convert to fraction form
    105,816.30/158,630.97 = 80,967.27/x
  3. Step 3: Cross multiply
    105,816.30x = 158,630.97 × 80,967.27
  4. Step 4: Simplify right side
    105,816.30x = 12,843,916,578.35
  5. Step 5: Solve for x
    x = 12,843,916,578.35/105,816.30
  6. Step 6: Final answer
    x = 121,379.38

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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.