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Finding the Fourth Proportional to 199,991.64, 299,987.48 and 80,103.04

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Solution

The fourth proportional to 199,991.64, 299,987.48 and 80,103.04 is: 120,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,991.64 : 299,987.48 = 80,103.04 : x
  2. Step 2: Convert to fraction form
    199,991.64/299,987.48 = 80,103.04/x
  3. Step 3: Cross multiply
    199,991.64x = 299,987.48 × 80,103.04
  4. Step 4: Simplify right side
    199,991.64x = 24,029,909,109.94
  5. Step 5: Solve for x
    x = 24,029,909,109.94/199,991.64
  6. Step 6: Final answer
    x = 120,154.57

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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.