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Finding the Fourth Proportional to 103,513.80, 155,232.30 and 41,171.40

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Solution

The fourth proportional to 103,513.80, 155,232.30 and 41,171.40 is: 61,741.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,513.80 : 155,232.30 = 41,171.40 : x
  2. Step 2: Convert to fraction form
    103,513.80/155,232.30 = 41,171.40/x
  3. Step 3: Cross multiply
    103,513.80x = 155,232.30 × 41,171.40
  4. Step 4: Simplify right side
    103,513.80x = 6,391,131,116.22
  5. Step 5: Solve for x
    x = 6,391,131,116.22/103,513.80
  6. Step 6: Final answer
    x = 61,741.83

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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.