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Finding the Fourth Proportional to 99,266, 148,815.32 and 43,063.78

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Solution

The fourth proportional to 99,266, 148,815.32 and 43,063.78 is: 64,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,266 : 148,815.32 = 43,063.78 : x
  2. Step 2: Convert to fraction form
    99,266/148,815.32 = 43,063.78/x
  3. Step 3: Cross multiply
    99,266x = 148,815.32 × 43,063.78
  4. Step 4: Simplify right side
    99,266x = 6,408,550,201.11
  5. Step 5: Solve for x
    x = 6,408,550,201.11/99,266
  6. Step 6: Final answer
    x = 64,559.37

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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.