Home / 100,869.93-139,195.49-55,551.85

Finding the Fourth Proportional to 100,869.93, 139,195.49 and 55,551.85

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Solution

The fourth proportional to 100,869.93, 139,195.49 and 55,551.85 is: 76,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,869.93 : 139,195.49 = 55,551.85 : x
  2. Step 2: Convert to fraction form
    100,869.93/139,195.49 = 55,551.85/x
  3. Step 3: Cross multiply
    100,869.93x = 139,195.49 × 55,551.85
  4. Step 4: Simplify right side
    100,869.93x = 7,732,566,355.41
  5. Step 5: Solve for x
    x = 7,732,566,355.41/100,869.93
  6. Step 6: Final answer
    x = 76,658.79

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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.