Home / 100,983.08-139,357.62-55,662.83

Finding the Fourth Proportional to 100,983.08, 139,357.62 and 55,662.83

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Solution

The fourth proportional to 100,983.08, 139,357.62 and 55,662.83 is: 76,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,983.08 : 139,357.62 = 55,662.83 : x
  2. Step 2: Convert to fraction form
    100,983.08/139,357.62 = 55,662.83/x
  3. Step 3: Cross multiply
    100,983.08x = 139,357.62 × 55,662.83
  4. Step 4: Simplify right side
    100,983.08x = 7,757,039,859.66
  5. Step 5: Solve for x
    x = 7,757,039,859.66/100,983.08
  6. Step 6: Final answer
    x = 76,815.25

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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.