Home / 100,651.85-138,896.68-55,329.92

Finding the Fourth Proportional to 100,651.85, 138,896.68 and 55,329.92

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Solution

The fourth proportional to 100,651.85, 138,896.68 and 55,329.92 is: 76,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,651.85 : 138,896.68 = 55,329.92 : x
  2. Step 2: Convert to fraction form
    100,651.85/138,896.68 = 55,329.92/x
  3. Step 3: Cross multiply
    100,651.85x = 138,896.68 × 55,329.92
  4. Step 4: Simplify right side
    100,651.85x = 7,685,142,192.67
  5. Step 5: Solve for x
    x = 7,685,142,192.67/100,651.85
  6. Step 6: Final answer
    x = 76,353.71

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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.