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Finding the Fourth Proportional to 99,145.86, 148,405.05 and 63,559.62

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Solution

The fourth proportional to 99,145.86, 148,405.05 and 63,559.62 is: 95,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,145.86 : 148,405.05 = 63,559.62 : x
  2. Step 2: Convert to fraction form
    99,145.86/148,405.05 = 63,559.62/x
  3. Step 3: Cross multiply
    99,145.86x = 148,405.05 × 63,559.62
  4. Step 4: Simplify right side
    99,145.86x = 9,432,568,584.08
  5. Step 5: Solve for x
    x = 9,432,568,584.08/99,145.86
  6. Step 6: Final answer
    x = 95,138.30

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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.