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Finding the Fourth Proportional to 99,536.88, 149,256.72 and 43,424.40

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Solution

The fourth proportional to 99,536.88, 149,256.72 and 43,424.40 is: 65,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,536.88 : 149,256.72 = 43,424.40 : x
  2. Step 2: Convert to fraction form
    99,536.88/149,256.72 = 43,424.40/x
  3. Step 3: Cross multiply
    99,536.88x = 149,256.72 × 43,424.40
  4. Step 4: Simplify right side
    99,536.88x = 6,481,383,511.97
  5. Step 5: Solve for x
    x = 6,481,383,511.97/99,536.88
  6. Step 6: Final answer
    x = 65,115.40

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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.