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Finding the Fourth Proportional to 99,468.78, 149,204.75 and 55,375.79

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Solution

The fourth proportional to 99,468.78, 149,204.75 and 55,375.79 is: 83,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,468.78 : 149,204.75 = 55,375.79 : x
  2. Step 2: Convert to fraction form
    99,468.78/149,204.75 = 55,375.79/x
  3. Step 3: Cross multiply
    99,468.78x = 149,204.75 × 55,375.79
  4. Step 4: Simplify right side
    99,468.78x = 8,262,329,880.10
  5. Step 5: Solve for x
    x = 8,262,329,880.10/99,468.78
  6. Step 6: Final answer
    x = 83,064.55

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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.