Home / 100,824.82-139,133.47-55,501.87

Finding the Fourth Proportional to 100,824.82, 139,133.47 and 55,501.87

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Solution

The fourth proportional to 100,824.82, 139,133.47 and 55,501.87 is: 76,589.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,824.82 : 139,133.47 = 55,501.87 : x
  2. Step 2: Convert to fraction form
    100,824.82/139,133.47 = 55,501.87/x
  3. Step 3: Cross multiply
    100,824.82x = 139,133.47 × 55,501.87
  4. Step 4: Simplify right side
    100,824.82x = 7,722,167,764.59
  5. Step 5: Solve for x
    x = 7,722,167,764.59/100,824.82
  6. Step 6: Final answer
    x = 76,589.95

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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.