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Finding the Fourth Proportional to 199,911.11, 299,949.95 and 87,671.88

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Solution

The fourth proportional to 199,911.11, 299,949.95 and 87,671.88 is: 131,544.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,911.11 : 299,949.95 = 87,671.88 : x
  2. Step 2: Convert to fraction form
    199,911.11/299,949.95 = 87,671.88/x
  3. Step 3: Cross multiply
    199,911.11x = 299,949.95 × 87,671.88
  4. Step 4: Simplify right side
    199,911.11x = 26,297,174,950.20
  5. Step 5: Solve for x
    x = 26,297,174,950.20/199,911.11
  6. Step 6: Final answer
    x = 131,544.34

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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.