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Finding the Fourth Proportional to 127,712.58, 191,568.87 and 43,481.49

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Solution

The fourth proportional to 127,712.58, 191,568.87 and 43,481.49 is: 65,222.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712.58 : 191,568.87 = 43,481.49 : x
  2. Step 2: Convert to fraction form
    127,712.58/191,568.87 = 43,481.49/x
  3. Step 3: Cross multiply
    127,712.58x = 191,568.87 × 43,481.49
  4. Step 4: Simplify right side
    127,712.58x = 8,329,699,905.22
  5. Step 5: Solve for x
    x = 8,329,699,905.22/127,712.58
  6. Step 6: Final answer
    x = 65,222.24

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1.5x scale

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.