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Finding the Fourth Proportional to 117,252.70, 161,857.11 and 83,764.06

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Solution

The fourth proportional to 117,252.70, 161,857.11 and 83,764.06 is: 115,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,252.70 : 161,857.11 = 83,764.06 : x
  2. Step 2: Convert to fraction form
    117,252.70/161,857.11 = 83,764.06/x
  3. Step 3: Cross multiply
    117,252.70x = 161,857.11 × 83,764.06
  4. Step 4: Simplify right side
    117,252.70x = 13,557,808,673.47
  5. Step 5: Solve for x
    x = 13,557,808,673.47/117,252.70
  6. Step 6: Final answer
    x = 115,628.97

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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.