Home / 100,896.91-139,238.66-55,575.05

Finding the Fourth Proportional to 100,896.91, 139,238.66 and 55,575.05

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Solution

The fourth proportional to 100,896.91, 139,238.66 and 55,575.05 is: 76,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,896.91 : 139,238.66 = 55,575.05 : x
  2. Step 2: Convert to fraction form
    100,896.91/139,238.66 = 55,575.05/x
  3. Step 3: Cross multiply
    100,896.91x = 139,238.66 × 55,575.05
  4. Step 4: Simplify right side
    100,896.91x = 7,738,194,934.18
  5. Step 5: Solve for x
    x = 7,738,194,934.18/100,896.91
  6. Step 6: Final answer
    x = 76,694.07

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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.