Home / 100,759.83-139,048.56-55,436.85

Finding the Fourth Proportional to 100,759.83, 139,048.56 and 55,436.85

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Solution

The fourth proportional to 100,759.83, 139,048.56 and 55,436.85 is: 76,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,759.83 : 139,048.56 = 55,436.85 : x
  2. Step 2: Convert to fraction form
    100,759.83/139,048.56 = 55,436.85/x
  3. Step 3: Cross multiply
    100,759.83x = 139,048.56 × 55,436.85
  4. Step 4: Simplify right side
    100,759.83x = 7,708,414,163.44
  5. Step 5: Solve for x
    x = 7,708,414,163.44/100,759.83
  6. Step 6: Final answer
    x = 76,502.85

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1.5x scale

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.