Home / 100,824.82-139,133.48-55,501.88

Finding the Fourth Proportional to 100,824.82, 139,133.48 and 55,501.88

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Solution

The fourth proportional to 100,824.82, 139,133.48 and 55,501.88 is: 76,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,824.82 : 139,133.48 = 55,501.88 : x
  2. Step 2: Convert to fraction form
    100,824.82/139,133.48 = 55,501.88/x
  3. Step 3: Cross multiply
    100,824.82x = 139,133.48 × 55,501.88
  4. Step 4: Simplify right side
    100,824.82x = 7,722,169,710.94
  5. Step 5: Solve for x
    x = 7,722,169,710.94/100,824.82
  6. Step 6: Final answer
    x = 76,589.97

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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.