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Finding the Fourth Proportional to 171,977.81, 258,310.50 and 103,725.80

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Solution

The fourth proportional to 171,977.81, 258,310.50 and 103,725.80 is: 155,796.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,977.81 : 258,310.50 = 103,725.80 : x
  2. Step 2: Convert to fraction form
    171,977.81/258,310.50 = 103,725.80/x
  3. Step 3: Cross multiply
    171,977.81x = 258,310.50 × 103,725.80
  4. Step 4: Simplify right side
    171,977.81x = 26,793,463,260.90
  5. Step 5: Solve for x
    x = 26,793,463,260.90/171,977.81
  6. Step 6: Final answer
    x = 155,796.05

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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.