Home / 129,424.73-178,571.25-75,722.94

Finding the Fourth Proportional to 129,424.73, 178,571.25 and 75,722.94

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Solution

The fourth proportional to 129,424.73, 178,571.25 and 75,722.94 is: 104,477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,424.73 : 178,571.25 = 75,722.94 : x
  2. Step 2: Convert to fraction form
    129,424.73/178,571.25 = 75,722.94/x
  3. Step 3: Cross multiply
    129,424.73x = 178,571.25 × 75,722.94
  4. Step 4: Simplify right side
    129,424.73x = 13,521,940,049.48
  5. Step 5: Solve for x
    x = 13,521,940,049.48/129,424.73
  6. Step 6: Final answer
    x = 104,477.26

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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.