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Finding the Fourth Proportional to 127,721.77, 191,580.59 and 43,540.56

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Solution

The fourth proportional to 127,721.77, 191,580.59 and 43,540.56 is: 65,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721.77 : 191,580.59 = 43,540.56 : x
  2. Step 2: Convert to fraction form
    127,721.77/191,580.59 = 43,540.56/x
  3. Step 3: Cross multiply
    127,721.77x = 191,580.59 × 43,540.56
  4. Step 4: Simplify right side
    127,721.77x = 8,341,526,282.58
  5. Step 5: Solve for x
    x = 8,341,526,282.58/127,721.77
  6. Step 6: Final answer
    x = 65,310.14

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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.