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Finding the Fourth Proportional to 187,702.01, 258,965.40 and 107,072.79

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Solution

The fourth proportional to 187,702.01, 258,965.40 and 107,072.79 is: 147,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,702.01 : 258,965.40 = 107,072.79 : x
  2. Step 2: Convert to fraction form
    187,702.01/258,965.40 = 107,072.79/x
  3. Step 3: Cross multiply
    187,702.01x = 258,965.40 × 107,072.79
  4. Step 4: Simplify right side
    187,702.01x = 27,728,147,321.87
  5. Step 5: Solve for x
    x = 27,728,147,321.87/187,702.01
  6. Step 6: Final answer
    x = 147,724.30

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Why These Related Problems?

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