Home / 103,327.36-155,086.08-80,103.04

Finding the Fourth Proportional to 103,327.36, 155,086.08 and 80,103.04

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Solution

The fourth proportional to 103,327.36, 155,086.08 and 80,103.04 is: 120,228.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,327.36 : 155,086.08 = 80,103.04 : x
  2. Step 2: Convert to fraction form
    103,327.36/155,086.08 = 80,103.04/x
  3. Step 3: Cross multiply
    103,327.36x = 155,086.08 × 80,103.04
  4. Step 4: Simplify right side
    103,327.36x = 12,422,866,469.68
  5. Step 5: Solve for x
    x = 12,422,866,469.68/103,327.36
  6. Step 6: Final answer
    x = 120,228.24

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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.