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Finding the Fourth Proportional to 99,650.34, 149,149.08 and 54,603

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Solution

The fourth proportional to 99,650.34, 149,149.08 and 54,603 is: 81,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,650.34 : 149,149.08 = 54,603 : x
  2. Step 2: Convert to fraction form
    99,650.34/149,149.08 = 54,603/x
  3. Step 3: Cross multiply
    99,650.34x = 149,149.08 × 54,603
  4. Step 4: Simplify right side
    99,650.34x = 8,143,987,215.24
  5. Step 5: Solve for x
    x = 8,143,987,215.24/99,650.34
  6. Step 6: Final answer
    x = 81,725.63

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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.