Home / 103,739.96-155,619.72-80,392.52

Finding the Fourth Proportional to 103,739.96, 155,619.72 and 80,392.52

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Solution

The fourth proportional to 103,739.96, 155,619.72 and 80,392.52 is: 120,596.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,739.96 : 155,619.72 = 80,392.52 : x
  2. Step 2: Convert to fraction form
    103,739.96/155,619.72 = 80,392.52/x
  3. Step 3: Cross multiply
    103,739.96x = 155,619.72 × 80,392.52
  4. Step 4: Simplify right side
    103,739.96x = 12,510,661,452.49
  5. Step 5: Solve for x
    x = 12,510,661,452.49/103,739.96
  6. Step 6: Final answer
    x = 120,596.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.