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Finding the Fourth Proportional to 144,702.44, 199,689.36 and 81,040.29

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Solution

The fourth proportional to 144,702.44, 199,689.36 and 81,040.29 is: 111,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,702.44 : 199,689.36 = 81,040.29 : x
  2. Step 2: Convert to fraction form
    144,702.44/199,689.36 = 81,040.29/x
  3. Step 3: Cross multiply
    144,702.44x = 199,689.36 × 81,040.29
  4. Step 4: Simplify right side
    144,702.44x = 16,182,883,644.31
  5. Step 5: Solve for x
    x = 16,182,883,644.31/144,702.44
  6. Step 6: Final answer
    x = 111,835.60

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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.