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Finding the Fourth Proportional to 127,900.88, 191,868.84 and 43,638.44

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Solution

The fourth proportional to 127,900.88, 191,868.84 and 43,638.44 is: 65,463.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,900.88 : 191,868.84 = 43,638.44 : x
  2. Step 2: Convert to fraction form
    127,900.88/191,868.84 = 43,638.44/x
  3. Step 3: Cross multiply
    127,900.88x = 191,868.84 × 43,638.44
  4. Step 4: Simplify right side
    127,900.88x = 8,372,856,862.21
  5. Step 5: Solve for x
    x = 8,372,856,862.21/127,900.88
  6. Step 6: Final answer
    x = 65,463.64

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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.