Home / 100,852.80-139,180.24-55,535.52

Finding the Fourth Proportional to 100,852.80, 139,180.24 and 55,535.52

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Solution

The fourth proportional to 100,852.80, 139,180.24 and 55,535.52 is: 76,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,852.80 : 139,180.24 = 55,535.52 : x
  2. Step 2: Convert to fraction form
    100,852.80/139,180.24 = 55,535.52/x
  3. Step 3: Cross multiply
    100,852.80x = 139,180.24 × 55,535.52
  4. Step 4: Simplify right side
    100,852.80x = 7,729,447,002.12
  5. Step 5: Solve for x
    x = 7,729,447,002.12/100,852.80
  6. Step 6: Final answer
    x = 76,640.88

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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.