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Finding the Fourth Proportional to 172,963.88, 238,653.84 and 105,016.60

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Solution

The fourth proportional to 172,963.88, 238,653.84 and 105,016.60 is: 144,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,963.88 : 238,653.84 = 105,016.60 : x
  2. Step 2: Convert to fraction form
    172,963.88/238,653.84 = 105,016.60/x
  3. Step 3: Cross multiply
    172,963.88x = 238,653.84 × 105,016.60
  4. Step 4: Simplify right side
    172,963.88x = 25,062,614,853.74
  5. Step 5: Solve for x
    x = 25,062,614,853.74/172,963.88
  6. Step 6: Final answer
    x = 144,900.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.