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Finding the Fourth Proportional to 187,169.25, 280,585.40 and 68,815.29

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Solution

The fourth proportional to 187,169.25, 280,585.40 and 68,815.29 is: 103,160.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,169.25 : 280,585.40 = 68,815.29 : x
  2. Step 2: Convert to fraction form
    187,169.25/280,585.40 = 68,815.29/x
  3. Step 3: Cross multiply
    187,169.25x = 280,585.40 × 68,815.29
  4. Step 4: Simplify right side
    187,169.25x = 19,308,565,326.69
  5. Step 5: Solve for x
    x = 19,308,565,326.69/187,169.25
  6. Step 6: Final answer
    x = 103,160.99

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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.