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Finding the Fourth Proportional to 99,265, 148,813.82 and 43,062.78

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Solution

The fourth proportional to 99,265, 148,813.82 and 43,062.78 is: 64,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,265 : 148,813.82 = 43,062.78 : x
  2. Step 2: Convert to fraction form
    99,265/148,813.82 = 43,062.78/x
  3. Step 3: Cross multiply
    99,265x = 148,813.82 × 43,062.78
  4. Step 4: Simplify right side
    99,265x = 6,408,336,791.62
  5. Step 5: Solve for x
    x = 6,408,336,791.62/99,265
  6. Step 6: Final answer
    x = 64,557.87

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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.