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Finding the Fourth Proportional to 103,304.57, 155,039.88 and 53,399.29

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Solution

The fourth proportional to 103,304.57, 155,039.88 and 53,399.29 is: 80,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,304.57 : 155,039.88 = 53,399.29 : x
  2. Step 2: Convert to fraction form
    103,304.57/155,039.88 = 53,399.29/x
  3. Step 3: Cross multiply
    103,304.57x = 155,039.88 × 53,399.29
  4. Step 4: Simplify right side
    103,304.57x = 8,279,019,513.69
  5. Step 5: Solve for x
    x = 8,279,019,513.69/103,304.57
  6. Step 6: Final answer
    x = 80,141.85

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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.