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Finding the Fourth Proportional to 138,804.82, 191,873.48 and 123,845.74

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Solution

The fourth proportional to 138,804.82, 191,873.48 and 123,845.74 is: 171,195.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,804.82 : 191,873.48 = 123,845.74 : x
  2. Step 2: Convert to fraction form
    138,804.82/191,873.48 = 123,845.74/x
  3. Step 3: Cross multiply
    138,804.82x = 191,873.48 × 123,845.74
  4. Step 4: Simplify right side
    138,804.82x = 23,762,713,116.98
  5. Step 5: Solve for x
    x = 23,762,713,116.98/138,804.82
  6. Step 6: Final answer
    x = 171,195.16

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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.