Home / 101,724.92-152,129-77,716.54

Finding the Fourth Proportional to 101,724.92, 152,129 and 77,716.54

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Solution

The fourth proportional to 101,724.92, 152,129 and 77,716.54 is: 116,224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,724.92 : 152,129 = 77,716.54 : x
  2. Step 2: Convert to fraction form
    101,724.92/152,129 = 77,716.54/x
  3. Step 3: Cross multiply
    101,724.92x = 152,129 × 77,716.54
  4. Step 4: Simplify right side
    101,724.92x = 11,822,939,513.66
  5. Step 5: Solve for x
    x = 11,822,939,513.66/101,724.92
  6. Step 6: Final answer
    x = 116,224.61

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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.