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Finding the Fourth Proportional to 116,805, 161,190.92 and 63,813

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Solution

The fourth proportional to 116,805, 161,190.92 and 63,813 is: 88,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,805 : 161,190.92 = 63,813 : x
  2. Step 2: Convert to fraction form
    116,805/161,190.92 = 63,813/x
  3. Step 3: Cross multiply
    116,805x = 161,190.92 × 63,813
  4. Step 4: Simplify right side
    116,805x = 10,286,076,177.96
  5. Step 5: Solve for x
    x = 10,286,076,177.96/116,805
  6. Step 6: Final answer
    x = 88,061.95

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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.