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Finding the Fourth Proportional to 117,279, 161,844.11 and 63,562.64

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Solution

The fourth proportional to 117,279, 161,844.11 and 63,562.64 is: 87,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,279 : 161,844.11 = 63,562.64 : x
  2. Step 2: Convert to fraction form
    117,279/161,844.11 = 63,562.64/x
  3. Step 3: Cross multiply
    117,279x = 161,844.11 × 63,562.64
  4. Step 4: Simplify right side
    117,279x = 10,287,238,011.38
  5. Step 5: Solve for x
    x = 10,287,238,011.38/117,279
  6. Step 6: Final answer
    x = 87,715.94

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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.