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Finding the Fourth Proportional to 127,909.62, 191,881.92 and 43,647.12

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Solution

The fourth proportional to 127,909.62, 191,881.92 and 43,647.12 is: 65,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,909.62 : 191,881.92 = 43,647.12 : x
  2. Step 2: Convert to fraction form
    127,909.62/191,881.92 = 43,647.12/x
  3. Step 3: Cross multiply
    127,909.62x = 191,881.92 × 43,647.12
  4. Step 4: Simplify right side
    127,909.62x = 8,375,093,188.07
  5. Step 5: Solve for x
    x = 8,375,093,188.07/127,909.62
  6. Step 6: Final answer
    x = 65,476.65

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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.