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Finding the Fourth Proportional to 103,544.21, 155,217.90 and 65,998.89

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Solution

The fourth proportional to 103,544.21, 155,217.90 and 65,998.89 is: 98,935.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,544.21 : 155,217.90 = 65,998.89 : x
  2. Step 2: Convert to fraction form
    103,544.21/155,217.90 = 65,998.89/x
  3. Step 3: Cross multiply
    103,544.21x = 155,217.90 × 65,998.89
  4. Step 4: Simplify right side
    103,544.21x = 10,244,209,108.13
  5. Step 5: Solve for x
    x = 10,244,209,108.13/103,544.21
  6. Step 6: Final answer
    x = 98,935.61

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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.